That's adorable. I love the exaggerated features and the look on its face. Very nicely shaded and great detail and texture in this piece. Your coloring is very smooth and admirable. The composition bothers me a little, in that it just doesn't seem a particularly appropriate subject to fill the page so completely as this, but that's just my personal opinion. It's still a delight to look at. Great picture.

aww he's very cute. Thehead is a bit bog but Im guessing thats what you wanted? anyway, it doesnt make it ugly, in factit makes it cutter