damn those three in-hand shots made me totally excited. what a perfect likeness. I'm totally seing heath there and that's wonderful wonderful wonderful!
Really can't wait to have mine in hand
As for the laughing head, i hope you won't take any critics as an offend buddy.
I like the head overall. But when I first saw it, i haven't recognized the eyes that these would be the problem, but the mouth area. He looks a bit like he's screaming and not laughing. The chin is too much pronounced and goes a bit too much at the front. also the corners of the mouth should go maybe just a bit more wider. I'll show you better with a pic what I mean:
and a before-after comparison shot:
again i hope you won't take this as an offend. I love your work, i just try to tell you what my impressions were. maybe I'm also alone with this feeling ^^