I was hopinh you'd repost those, I didn't want to scoop you and do it on your behalf. I think the firing crater on the first image is pretty much how I'd like to see it, or maybe a little more incomplete. Good stuff (as always).
That first pic also reminds me of something else, a face. The "hat" kinda makes it look Jewish, but I think it reminds me of Jason Voorhees in Friday the 13th part VIII: Jason Takes Manhattan. One of the worst horror movies ever made with some of the worst make-up you've ever seen.