1. If you can, put pronouns in your bio, but if it would be unsafe to put what you'd want to and dysphoria-inducing to put something else, don't worry about it!
2. Tell us about yourself! Whether a post or in your bio, let us know who you are and what you're about!
3. Remember the platinum rule: do unto others as they want done unto themselves. If someone asks you not to do something, listen! (e.g. if they want a DM before sending a follow request, DM them first!)