You'll need a Twitch account if you don't have one already: https://www.twitch.tv/

Go to TaintedTali's channel: https://www.twitch.tv/taintedtali

Watch her streams when she's live until you have 500 Log Coins or claim the green chests for extra Log Coins.

If you Follow her you can get notifications of when she's live, on your phone (You'll need the App)

When you claim the reward, be sure to comment with your Starbreeze Nebula name, which is the GREEN ONE in the game's main menu in the top right, an example of mine:





The 'Elisabeth Mask' reward you have to claim looks like this:









Send your message that comes with the redeeming of the award, with your Starbreeze Nebula name

Elisabeth should see it and add it to your account as A PRESET MASK (At the top) in your Mask section of your Loadout, in a day's time.