Bobble-Heads...the new rage?

I thought I'd upload an image of what I'm working on recently. It's just a rough draft. I have a client who requested I do a whimsical drawing with the kids heads as almost bobble-head like. I hand drew it, scanned it, cut the heads out in Photoshop and added them, then I'll add color in illustrator. Now...the secret technique is out.
I like the way it is shaping up. I think I'll try marketing this idea and see where it goes. It can be a fun personalized gift.