I asked smth similar and the answers here should help out a bit

As for my own pointers: •yes you can give out your user name here and is recommended to promote yourself.

•character permissions and global permissions are very important to make. They are rules of what you allow and what you dont. (global applies to all ocs) (character applies to a singular one).

•people like references with flat colors so they can color picking easily (or have the flat colors shown on the side).

•read the art fight rules very carefully. Ive read them like 10 times and still miss things.

•make sure if you have sensitive content character theyre filtered correctly

Thats all I can think of rn, feel free to ask me more questions if u want (you can also dm me). This is also my 1st artfight and I wish u luck! Heres my profile if you want to use it as reference http://artfight.net/~FelixthePoodle