Hi there ! concept sketch for matte painting.
 

Here's a concept, hope you like it !
Give me advices, they'll be welcomed :)
http://img188.imageshack.us/img188/4756/concetp.jpg

I have an issue with cloud realism, if someone could help me that will be great.

Thanks a lot !

http://img9.imageshack.us/img9/4956/concept2c.jpg

Hi there concept sketch for matte painting
 

That was a fun site -- thanks for the great sketch. I am going to have to remember that.