Man you really need to do some studies of structure and anatomy, URGENT!
don't worry about rendering just do some studies, there are still plenty issues to correct
I'm sensing some Bollywood influence. Have you thought about using colour? Do you reply to any comments?
Your drawings are all very stylised, all I can say is that life drawing and using references would help you alot.
Having the ability to draw realistically allows you greater freedom when you choose...