This is my sketchbook ! D:

[Blewzen]

Hey cool stuff here I specially like that bear with armor. But I would just say, study anatomy from birdgman or loomis books (maybe you already know these) and from photos. Also I see few problem on your shading, for example on the jacket of the woman in the forest, the wrinkles have to much strong shadows you should try to smooth the transitions between light and shadow, Color and light by James Gurney is awesome and easy understandable book, is helping me alot with that stuff.
Keep working hard!