Sketchy lines, and try hard effort.

[Amit Dutta]

You know man, the crit is just for you to think about and apply to your future work as you choose. You don't have to defend anything. I wouldn't want you to defend anything...unless I'm totally wrong of course; then you can tell me to go to hell, or just ignore me. :) You don't have to even reciprocate the crit as long as you can use it to improve your approach that's all I care about!

I admire what I see in your work ethic, and you know where you are going wrong and you clearly have the motivation to improve. This is a lot more than others have.
It's daunting I know, but just take small steps to address your most immediate and fundamental issues first and attack those...everything else is just plain hard work.

I have no doubt I'll be seeing lots of progress in your sketchbook. Good luck mate and keep pushing!