That's very cute! Is this traditional media?

As for critique, there's only two tiny details I see. The more minor being her right ear, the tip on the other ear has the sharp and then curved nature of puppy ears, but the right ear seems to have a uniform curve (does make sense?). Sorry it it's confusing, my mind sees things that my mouth is too dumb to say x3

The other detail I see is the angle of the nose. while it looks good as it is, it kinda seems like the nose has the opposite angle of the mouth and eyes. It also has no nostrils, but it looks cuter without them anyway, lol.

Either way, a very cute piece, very well done :3