Forrest's Sketchbook of Wondercanes and Dreamsicles.

[iCi]

Holy cow, a lot of hard work, keep it up! Don't forget to light the forms properly before you go into rendering, you are skipping that part, and on most of the stuff I'm missing that \3d\ feel of the form. Just try to model every single lets say facial feature, like you're sculpting in clay. Hope this helps out :)
That knight is awesome!