First off, is better for you download HF Patch first, because it contain alot of material that help you to achieve more detailed model.

Guide to download the mods:
https://steamproxy.com/sharedfiles/filedetails/?id=1772989046

Now search the character anime model you want to create, best way of course google it and search if there a wiki of them, because mostly they have proper image of the character you want.




Once you get the image that represent proper model of the character you want make, download the picture and save it.

then go open it with paint or any image editor you have, edit the size of image to a proper koikatsu background image (mostly 1980 x 1080 pixel).



And then save as .png it on "Koikatsu Party\DefaultData\common\bg", then change the Background Type to the picture you saved before.
This will alow you to load image in character creation so you don't need spamming alt-tab.

To make it easy for editing the face select the Bangs to none.



And then go back to Head Shape, now leave any of selection to default except Lower Face Width edit that and make it same as the character face shape. leave other for later.



Once you done with it go to Cheecks slide Cheecks Width and Cheek Position (Y Axis) and try to make it same as the character face, at this point you get a basic of the character face.




After that go to Eye Shape choose the closest Upper Eye-line Type and Eye-line Type with the character you want to make. also feel free to change Eye-line Color too. if the blinking animation annoy you turn it off in Operational Panel, Leave the slider for later.



Go to Eyes search the Iris Type and edit the upper and lower highlight, that same as the character you want make, pick the same color by going to slider and then click Pick color from desktop, this is will allow you to take any color your mouse hover in, then left click to apply the color. Also try adjust Pupil Position, Pupil Width and Pupil High to shape proper pupil usualy more widht mean more round.



Go back to Eye Shape and time for play with slider. before this let me explain the function of slider.

• Eyelid Shape 1 (Upper) slider control the corner upper eyelid that close to nose, which 0 make eye look sharp and 100 blunt.
  
  
  
• Eyelid Shape 2 (Upper) slider control the middle upper eyelid, if you set it to 0 it make eyelid flat and 100 rounder.
  
  
  
• Eyelid Shape 3 (Upper) slider control the corner upper eyelid that close to ear, 0 to make it look like tired and 100 to awake.
  
  
  
• Eyelid Shape 1 (Lower) slider control the corner lower eyelid that close to nose, 0 to close to central and 100 to make it far from central.
  
  
  
• Eyelid Shape 2 (Upper) slider control the middle lower eyelid, if you set it to 0 it make eyelid flat and 100 rounder.
  
  
  
• Eyelid Shape 3 (Lower) slider control the corner lower eyelid that close to ear, 0 to close to central and 100 to make it far from central.
  

the rest of it self explanatory.

Try to shape the eyes same as the character as you can.



After that go to Eye Brows and as always try shape it same as the character you want to make. and change the color of it if you like. Eyebrow Shape (Inner) & Eyebrow Shape (Outer) make corner of eye brow move, 0 upward and 100 downward.


Then go to Nose, and adjust the slider the only thing you need to watch is Bridge Height leave it around 25-55 to make it look like normal.



Go to Mouth adjust slider for Vertical Position and Width of Mouth for position, you can leave the rest as default if you like. the Mouth Corner Shape make default mouth expression, 0 for normal,100 for smile and -50 for unhappy ,this expression only clear to see if you make the Width of Mouth wider.


Now go to Jaw adjust slider for Jaw Position (Y Axis) and Jaw Width, leave other slider as default if the character doesn't have weird chin.


Lastly Makeup and Beauty Spot, to adding more detail you can pick the option that it has, you can also make the character more beautiful by adding more makeup, just make sure you set the transparancy to low so it doesn't look bad.



after finish, compare the character and adjusting again if some part doesn't suit your taste.

After you done with face, now lets go to hair, first pick the style and color similar to character hair, however we don't always have same with it, so what we gonna do we just pick some part that look semilar.



After you done go Accessory to add part that missing from the character hair, if you using HF mod most of hair part will be in Head and Face. add the hair part and adjust it, make sure there are part that stick out from face.



By adjusting the X, Y, Z of the size you can have almost similar hair with the character, and then move it to the place where it belong. You can also add other accessory while at it. Note: for hair accessory, if you want add more from other part make sure set base position to hair group.



you can also make your own in blender or something if you feel unsatisfied. Make sure you copy all of hair part you add to all Outfit.

Now i gonna make this safe for work by just explain what most importan to Imitate the body size.

• General: Height & Head Size; this is important adjust to make the character more to adult or childish type, childish type has more large head than adult to make it more appealing. and ofcourse set the color same as the character, if it hard for you try using Pick color from desktop on Slider.
  
  
• Chest: This is most delicate part, when you want make big chest, by adjusting Breast Size however, if you do that sometime the breast look weird, so in order to make into a nice shape, adjust the Vertical Postion make sure is on mid betwen 30 to 50, to make it doest stick to each other adjust the Horizontal Angle and Horizontal Postion, which you need make it usually more wide, adjust the Vertical Angle to lower to make it look like heavy while higher to make it light. Set the Pointiness from between 25 to 55, Shape from between 25 to 75, Weight between 35 to 70, Areola Bulge between 0 to 55, Nipple Protrusion between 0 to 60, Areola Size between 40 to 85. for nipple colour and type, i leave it to your imagination ( ͡° ͜ʖ ͡°)b.
  
  
• Upper Body: how deciding the character have a thin or thicc body, obliviously higher number mean more thicc. Start with Neck Width normal size of it was between 25 to 60, Neck Thickness is between 0 to 65, Shoulder Thickness between 20 to 45. Upper Torso Width between 0 to 40. Upper Torso Thickness between 0 to 81. Lower Torso Width between 0 to 70. Lower Torso Thickness between 0 to 85.
  
  
• Lower Body: Waist Position controling waist and navel position, less than 0 more than 100 it will look weird. Stomach, 0 is thin while 32 mostly already same position as chest. Upper Hip Width i never slide it less than 0 and more than 35. Upper Hip Thickness normal is between 8 to 78. Lower Hip Width 0 is normal while 60 already super thicc. Butt Size less than 25 make man sad while 100 still look nice, Butt Angle normal is between 25 and 80.
  
  
• Arms: the only you need watch properly is Shoulder Width and Shoulder Thickness and else than that less than 0 and more than 100 will look weird.
  
  
• Feet: same as upper body, this is deciding thin or thicc, however sometime this also make character look weird, so here the number that doesn't make the character too weird. Upper Thigh Width between 0 and 65 already make the thigh look thicc. Upper Thigh Thickness between 15 to 70. Lower Thigh Width between 0 and 60. Lower Thigh Thickness between 0 to 60. Thickness Below Knee between 15 and 50, Calf 5 to 60. Just leave the Ankle Width and Ankle Thickness to 44(default)

Other than that just edit it as you like or add more detail to your character, after that change character to other pose and check everything and change some if something doesn't suit your taste.

Same as you make the hair, first pick something semilar to what the character wear. Then cover some missing part with accessory, adjust the size and placement, or search more mod for it. add more outfit if you like. However since i can't find the semilar and is too pain in the *** to search it so i give up on this stage.

If you done with all of it, Compare the result with the character, edit it again if you need to. Edit the Name, add Personality, add Quirks too if you like. and then Save the card with the pose and background that you like. Congratulation your card is done, even if not a 100% but you know what? even a doujin is not 100% accurate and its still good. Keep practicing at it and you will be good at it.



Sorry for my bad english and typo on guide, comment in it if there anything you would like to ask.

Also i make the video of some character creation if you want to know the proccess:
https://youtu.be/BCTzQngESvk
Result:



This is example card i made, download it if you like, more of the card i made can be found in:
https://kenzato.uk/booru/faust_wither
https://www.pixiv.net/en/users/12728825