.Comissions are where you either pay real money or points for an art piece by the artist. I'm doing point comissions, and you can pay with points by putting them in the donation pool I have open.
.Requests are where you ask the artist to draw something for you for free, and if they're interested, they may accept. Sometimes though, they don't accept the request. Not many popular artists do requests.
.I myself don't know much about this, but I ASSUME an art trade is where you draw something for another artist, and in return, they draw something for you.Usually I've found this to most often occur between deviants who are friends.
Depending on the difficulty of the art, with comissions I may charge more points, or on requests, may decline. My strengths are realistic animals, anime portrait shots, and maybe some other things. HOWEVER, I may not be able to do full-body drawings of anime people or anthro, because I am not experienced in drawing human anatomy. I can ALSO do some Kung Fu Panda drawings. If needed, I can do anthro my way, where the anatomy is less human like, but still somewhat similar. Comment here if you are interested!
(Edt:I will most likely NOT color these, so if you have Photoshop or Paint Tool Sai, etc, then I'm giving full permission for the people who asked for requests to color it themselves and post it, as long as they give me credit. If they don't have a coloring program though, I may or may not color it fir them. For commisions, I will color them myself without having to be asked, unless they specifically ask me not to. So, if you want it colored for sure, do a commish, and if you want it colored, but don't have points, you can color it yourself. )