First of all go to your FeralHeart folder and look for the emotes CFG file. Open it, if you cant open it chose a program you wanna open it as and open it as notepad.
Now you'll be able to see all emotes, and also get a view on how to do.
Then scroll down to the end of the emote notepad. [Name of your emote] the [] needs to be there.
Then start to mess around with the numbers to get an emote.
I always just make something random, then name it when I'm done. But it's all up to you how you wanna do it!
Don't forget to save c:
Done!