Actually I really liked this. Some of the camera angles didn't really work for me though but on to what really matters...
You've Probably pushed 'elements' to its compositing limits with that. Th egreenscreenign has left an obvious greenoutline around the boy in a lot of shots. Not really your problem but one of the tool used to key with. you really need a proper compisiting tool to do a better job.
you may have been able to colour correct some of the compositted elements inside Elements (no pun intended) so they better match the shot but that is a different artform in itself.
What does make it look home-grown though isa the level of compising. i.e. the fact that the boy casts no shadows.
but even though this does cheapen it somewhat, it;s still a great little movie. Even better when you consider it;s done in 'elements'