1) "I'm a raindrop"? "A raindrop that likes to dance!". To be honest, he looks kinda goofy in that pose, kinda child-friendly, if you know what I mean. Or maybe he's just a silly person/raindrop?
2) A raindrop
3) I like them, they are simple, yet I'm thinking "Could... Raindrop... Oh! Oh! It's going to rains" aka. I sense a story.
4) Yes you do and yes you know
(Sorry for the sillyness of this post, I just hope it helps)