Helm gives good advice, and what he describes you will most likely learn on your own, h4x0r. (boring story time) ...During my early childhood (i'm bored already, myself) I would get tracing paper and outline all my favorite characters using the instruction manuals that came with games. Kirby, Mega Man, Zelda-- you name it I traced it. After every trace I'd use some tape and stick it to some crisp white paper-- man, I felt accomplished! Throughout grade school I'd be doodling in those styles I admired so much; my own Mega Man, my own characters. It was great and I never tired of it; going so far as copying not just characters but other artists' styles holistically throughout drawing/painting classes in high school (always asserting it was never my own style of course).
However, I guess after a while I was tired of copying. I had always been communicating what I wanted to through others' styles, which is fine. I think copying is part of learning. After years of doing that, though, I was ready to do my own thing and it turned out I wasn't a complete failure at drawing despite there being no reference to hold my hand. (end of boring story time)
So, all that to say. Copying and trying out different styles is (WARNING: simile approaching) a bit like training wheels on a bike. Honestly, I'd say keep doing what you're doing until you get bored-- next thing you know you're drawing on your own.