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Year, I am no way near as good as you... so I'm not going to try and criticize you at all firstly because it all looks sweet as and lastly because i only criticize something that I could do myself.
By the way I have had a look over this thread a few times when I needed help in my anatomy studies. You studies into poses and the human and animal anatomy have helped dramatically improve my understanding of the structure and shading of the external appearance. I have a ridicules amount of study to do before I can confidently draw up a full body sketch well but I am only 18 so I have some time to get my structure up to scratch.
Thanks for your thread and I hope your work Improves as well!