Welcome to Gaia! ::

Very cute! Love the design. For some reason I like maimed eyes. sweatdrop

The shading did turn out very good, but I encourage you to consider your light source even more. Right now it seems to be coming from someplace top left (rather distantly), but there is no shadow cast onto the rope behind his head and the shadow under his body seems to indicate he's being lit from directly above.

It's really tricky, but think about that diagram you've seen of shading on a ball a million times. There's the highlight and the cast shadow, and so on. You've got to try and think of the objects you're drawing like that; geometric shapes being hit by light in 3d space. So that means the source and intensity of the light is the most important thing to decide. You can have multiple sources, but I recommend for practice's sake that you choose one to start with and stick to it consistently. Then think about each small part of the drawing and how it would look when the light hits it from that angle.

You did a good job but there is always room for improvement, and getting a hang of light will make all of your art much stronger.

In future, you should do preliminary realistic sketches of things before you stylize.
In other words, sketch real bunnies before you draw cartoon bunnies; it makes the whole thing more believable and 3 dimensional.
The sketch doesn't look like you know what an actual rabbit looks like, just a faint idea.
That having been said, it's not bad, just in need of work.