Ouch >.< well its hard at first you need to gain a rep and some followers to be able to do well with commissions . I can't help with commissioning anything as I have my own problems tying me hands up OTL.
Well that is one way or you can do art trades *more so if they are well known* or free commissions. Well on the subject of fan art well here a list of what people seem to like on TV. "My little pony:friendship is magic", in my opinion it is too overly cute for my taste but for some reason it is a well like show even by grow men called bronies . "Adventure time" It is a strange silly story about a 14 year old boy and his magical dog Jake living in the land of Ooo where they go out and have Adventures by helping people often in silly ways. There is a dark side they don't talk about much but this "suppose" to happen after a nuclear holocaust, which somehow brought magic back. "regular show: anything but" you have to watch it to understand . There also American dad, family guy, Simpsons, Cleveland show, Dr. who, john Stewart, colbert report.... I think that is it but there also games and of course net fads like nya nya cat or slander man