Aww I'm glad you like him. I designed him a while ago and had fun making him into a model.
Screwloose was a challenge to act, though. XP His eyes can't move and his mouth doesn't stretch... I had try to show his mood more through body language.
I think you'd be great at making a 3D movie! So long as you've got a story idea you just need to decide the shots and learn the software. Panels in comics are much like camera shots in film so you've got a head start there already with your experience doing Stick Monkey Chronicles.
Does it make you a little sad? I think it turned out a bit bittersweet myself. Initially it had a sad ending that I canned. I suppose the way I look at it is that all he wants to do is get away from the dead terrain and see life (e.g. plants). So the dandelion was a glimpse at that, now he sees vastly more greenery below! The bittersweet part is that he now has to get down there somehow.
I think since there's no audio this is one of those films that different people could interpret very differently. Although bittersweet I read it as hopeful personally. ^^