Ahh! thats probably what helm wanted to see and clearly there's loads of things to point out there.
orait, I dont mean to sound like an asshole but that sketch is really nothing impressive. dont get me wrong, I'm not bashing on you. Im not calling you pretencious or anything, I supose you are aware that is not a great drawing.
so Im going to ask you this. did you do that with the best of your effort or is that just a quick skecth that you threw on paper just to post it here, cause you were asked to?