Bobbie's New Car!

This is a picture I made of Bobbie's new car!
Rosie seems to like it!
The wheels look like they are falling off, but I guess they look better than if they were in the side of the screen.
I tried to do some kind of shading, but it didn't really work.
Tell me what you think by rating it below.
This was a request you know, so if you would be kind enough to give me more ideas, (my folder of new Bobbie pictures is pretty full but don't be shy!) that would be great. I love drawing!

Thanks!
Linnette