/ic/ - Artwork/Critique

Drew Kirby since he's relatively easy to draw. One of the first works since I picked up a pen. Drawn digitally. I feel like I kind of got him down correctly, minus the missing blushes, but my lines aren't really good. Should I try to get used to my small tablet (only got it because of osu!, lol) or should I get a bigger one, specifically for drawing?

New to digital art or really anything art related in general. Some obvious flaws are jagged line work and weird shading, especially on the feet. Some tips on how to blend colours, so it looks more natural? Using Krita, since I can't afford Photoshop.