Looks like it could be very useful. I only have two suggestions:
1) Try and make the grass seem a little bit less repetitive.
2) A lot of the pictures appear broken to me; you may want to fix that.
If you're on a Mac, that's why. I'll try and fix it.
EDIT: See if it works now.
EDITEDIT: The grass was pretty hard to do, and I don't think I can make it any less repetitive than it already is.