I like the colour (it reminds me of the old forums), although I'm not keen on the leaves.
@ csuti: After reading what Aurora said, if you textured the file divider it would look much better.
And you are right, there is nothing wrong with a header that is slightly bigger than 200 pixels high, but I was thinking around 300 pixels being a very generous limit.
By "space", I meant that there is lots of space around the images and items. I'll post back later with an example (no photoshop on this laptop).