i didn't get to look at all of your drawings but i did get to check out a good number of the black and whites and some of the color ones...don't be so hard on yourself lol..you have a good amount of drawing talent in you..my advice would be to work on the perspective angles and proprortioning of body parts mainly..i noticed on some of them that the angle of the legs and arms was off and a little too flat looking. if you get stuck for a formula, just keep remembering that all drawing is is just putting buidling blocks together piece by piece...no matter what something looks like it's always one or a combo of the basic shapes..jus draw cubes, cones, cylinders etc. first then throw on some details...not sure if your already familar w this stuff, but it never hurts to keep being reminded of this...drawing is alot more simple of a process than people sometimes percieve it(or some people make it try n seem )
as far as coming up with your own style..just keep doing what your doing..your on the right track. keep copying the style you love the most. theres nothing wrong with that.. eventually your own style and formula is going to evolve out of copying. so def keep up with that...
and try throwing in some versatility too.dont work too much in one area..break out into drawing animals, cars, landscapes. realistic studies, catoons, etc. just to keep yourself fresh..otherwise, you'll get tired and frustrated with drawing and might give up on it alltogether...
hope this helped you out a little..if you want any other advice let me know. i'll try and help you out as best i can..
'the past becomes settled in the present. the only place it truly exists.'
"There are two kinds of men in this world. Those with loaded guns, and those who dig. You dig."
"in a world gone mad, only a lunatic is truly insane."