Hm, I used to love Scooby-Doo. ^^
Anyway, I like this picture, but there are some things I noticed. One everyone in the picture, the eyes are not exactly right. Scooby's should be big and expressive! That's just the kind of dog he is! Ruh-Roh!
On Shaggy I noticed quiet a few things, first off, he seems way to muscular. He is a lanky character like his good friend Scoody, and also I saw his hair looked much better in this picture than the way it should be. That was a problem. He name is Shaggy, so then his hair could also be described as shaggy.
Those were the major things I saw, but even with those, you can not deny that this is a good picture. ^_^ That's no mystery. Sorry, just had to say it. Cheesy overload. X3