first outdoor scene

okay lads! I will post this up for a short time, as I'm not supposed to post it up, but I really want some help to get perfect renders! this render is 5000pxl width in original size, so the small picture that you see here is crap! but well didnt want to post orig size!

plus, this picture isnt photoshopped yet, so this is straight outta max, without any more work!

I only need some more tips please!

I used max 9 and vray

used a vray sun and vray sky!

thanks for help