Interesting look to the character! I would say he just needs some cleaner shading. The shading on the character should be well defined emphasizing the crevasses and roughness in his character. While adding more detail to the pumpkin pieces, I would say try to find a simpler way to do the details for the roots otherwise. To accomplish this you can do quick drawing sessions where you time yourself trying to find the most efficient way to emulate a certain texture. The root details also kind of make it hard for the viewer to find a certain focal point, which I would have to assume is the face. Shading can also work to you advantage in that as well. The shadow created by the light on his hand should somewhat darken the arm in the foreground causing the torso to be a bigger focus. After that the light is very close to his face and should light it up the most creating a sort of contrast in that way. Thing is, you have a wonderful sense of structure and anatomy that is visible. The character balance is only slightly off, but it something you get the hang of. Anyway, keep at it!