Be respectful. Flaming and general rudeness will just get you banned.
Items posted here are not allowed to be reposted anywhere else by anyone other than the creator.
I can't stop you from making requests of the creators. However they aren't' required to take them (although we may occasionally post offers to take requests). I do suggest if you're going to request something, be specific (offer an image of possible), and ask nicely. Demands will probably be ignored as this is a hobby not a job.
Can't think of anything else right now but if something comes up I'll add to this list.