oh yes x3

Try to leave as little white space in the image as possible. It makes it look so plain. Also, the body on the left is very thin, make them wider, please. Also, you left out the tail. And try studying the shading of spheres for the belly. It looks a little deformed. Also, with Mikey, it would have been nice if you included more of the head, as well as dialogue. Dialogue is an important part of any drawing, honestly. You don't realize it until you add it in. Also, the fingers look a little stubby, try adding a fifth and make the hands more slender. Lastly, it would be nice to have a background, whether it be plain or not, it at least lets us know where this is taking place.
Otherwise, good work!

i cant do backgrounds there are sooooo complicated. also there is no tail there, cause it's behind him. I'll work on everything else. Thanks!

Welcome.
And you can always cheat and put a layer of a picture in the background...

Hm? like a picture of a real background?

Yes.
If you use GIMP or Photoshop, it can be the bottom layer. Just find a random picture off of Google Images and start drawing on top of that.

okay thanks for the tip! ^^ I'll try that with the next pic.