Neat map and nice models, they look too strange to me, I can already see how you made them. BTW: How can you make the extruded parts look smooth too?
As for the drawing, all I can say it's not too good. There are many problems like disproporsions and stuff. Try making the neck shorter and thicker, looks unhumenly thin and long. The nose is too long and the head is too big for the sholders and neck(maybe thats the problem with the neck), make it smaller or else the scientist is going to need a really strong neck!
I advice you to get some anatomy books. I have an astounding book of anatomy called 'artistic anatomy' made by a french doctor and artist and interpited by an amarican(I think he was american).. anatomy lucturer... don't remember anything else he did. It is one of the greatest anatomy books.(maybe the greatest, I was only told that and it is much much better then the other anatomy books I saw)
I can be a mapper, and I quite good in it.