Playground

I made this commercialy, and it has a totally diferent style of what I've been posting here... With this I intented to show how could be a playground in a themed hotel. I drew with pencil, scanned and painted in PS 6 using a ordinary mouse... Now I have a tablet, so I think I could make it better today...

My favorite part of this drawing is the up right... Where we can see a beautyful sun and the top of the trees... Love it!

What you guys think I could have done to make it better???