It's in my journal too but I'll put it here anyways:
-If I favourite your art, I appreciate a "Thank you" / llama / a favourite back and even a watch if you like my art.
-If you give me a llama, or favourite my art, I will check your profile out and either: thank you / favourite your artwork back / watch you (if I like your stuff.)
-If I don't like your art, please don't expect me to. It will make things awkward for the both of us.
-If you have any questions / suggestions (for some reason) for me, I'd appreciate a note more than a comment.
-I'm not interested in groups.
-I usually only favourite or watch rather than giving a llama or comment.
-Constructive criticism is more than welcome.
About constructive criticism actually. It has constructive as a word in it. That means you have a statement about something being bad, and then a statement about how it can be better.
I tried to keep it short.