Made this in PS in a total span of about two and a half hours.

It's made out of three seperate images:



Three images used (Warning 56k users, large pictures.):

Castle:

Waterfall:

Sky:

You did a really nice job. There are two points though one is the mountain directly to the right of the castle, the cloud seems to be going through the mountain, it just seems a bit awkward. Also the "construction" concrete secene at the top of the waterfall could have been left out, it's a bit out of place. But all in all it look great, the waterfall is nice with the castle.