Why would he need to 'go back to the drawing board' its a good start to the model, and can be improved as the is, he'll really just need to give the legs a proper texture and the face texture should correlate to the style of the other textures and work better on the face, the model itself looks fine.
The rest of the improvement wouldn't be by 'going back to the drawing board' but through practice, as you can see from my sig, low polygon modelling is not one of my skills, but high poly is, and I admit, I find low polygon much harder than high poly, but all prospers through practice, with comments like 'go back to the drawing board' kind of brings your work and confidence down which makes it LESS likely for someone to improve, if some one said I needed to go back to the drawing board on what I though was a nifty head, I wouldda lost confidence because that head I made I felt I did pretty well on, this head I am speaking of the one that turned out to look like micheal jackson.