Learn Proportions man, that's all I have to say. Study proportion and your drawings will be alot better, just look at the legs compared to the arms/rest of the body on all of your drawings.
experience comes with practice. good job though
Not bad, better than I can do with my hands. (I'm digital artist/modeler) I stink at drawning by hand, but in photoshop, thats a different story, ^_^