It looks ok, except that :
1. At the beginning of the river, the water should be flat, not following the form of the book.
2. Since you have a path, that croses the river, you could add a bridge over it, too.
3. You could also try to keep edges to the pages so that the grass is not entirely covering them.
4. The original tutorial is this :
http://10steps.sg/tutorials/photoshop/making-a-book-of-magical-playground-scene/
made by Johnson Koh - check it out.
Cheers.

Very nice work author...In high resolution river don't look good at all,it look like some mix of green white mess...so maybe would be better without...also u could use some color adjustment layers to achieve better blending and to pop u entry...if u decide to do that PM me to give u some advices about that...any how image is very nice...gl

Thanks erathion for your kind help. May it looks better now.

Author I agree that is a good tutorial Very nice work and Best of Luck