I'm not a fan of guro art, but I would assume that if you're going for gore, you probably shouldn't make it look so clean. The entrails look like they were properly washed and are somehow attached directly to the skin at the waist, rather than falling out from under it.
Being a clown, one would hope for her to be surrounded by something fun or colorful in the background. Instead, there's nothing, and it irks me that her face paint is the same shade of white. As for the upper body and face, however, I love all of that. The hair, the bow, and that fun little smile are all perfect. Bumblina is just so gosh darn adorable. It's a shame there isn't more of her to love (I prefer "full-figured" women).
This isn't bad. It's not to my tastes, but it wasn't meant to be, either. Good job.