I don't think I've fully developed something entirely mine, and it's also true that my art for classes and from personal projects is totally unrelated to any of my fan art or any of the stuff I've posted here.

Stuff from my sketchbook may have a resemblance, but that's mainly because I focus more on painting and sculpture. A lot of the stuff that influences me is minimalism from the sixties-- I try to incorporate that idea in painting (shows in my graphic design as well, though simplicity's hot in this applied art right now). Also really like the idea of conceptual art and have admired a lot of the stuff from Yoko Ono. Right now I'm obsessed with Xavier Veilhan and Tomas Saraceno-- really recommend looking at their work sometime.
So I take bits and pieces from that as well as what I like most from art history. I really like the excess of Baroque, especially French and late Baroque. That shows up in my stuff, though maybe also in my fan art.
For drawing, I definitely look up to Jean Philippe Delhomme's illustrations:
And of course from the video game industry there's Yoji Shinkawa who does the highly artistic concept art for Metal Gear. Then there's Amano who did the concept art for the earlier Final Fantasies-- I admire that guy a lot.
Still, I like to be artistic and like to apply all my creative skills to anything, so I while I don't take fan art as seriously, it's always worth trying to pull off a different kind of creativity there. Always worth it, I think.