Butterfly and Cat

Wow what a pretty drawing, the cat going after the butterfly is pretty cute idea as well. You're really good at doing, I guess you would call them atmoospheric type pictures?  

The only thing I can really see that could be improved would be the clouds. Currently they just look too oval, and don't really have much of what would be a cloud shape? (Kind of makes  me think maybe they're balls of mist? But they seem to condensed if they are.)