To misquote the Renaissance sculptor...

[kproche]

You start with a large block of foam and just carve away everything that doesn't look like a carnosaur. Next step -- skin! (The eyes and fins are pinned on to check the overall effect)

	Foam head form left side
	Foam Head form, front view
	Foam Head form, right side The eye is a half a squooshy silicone football with part of the original bubble pack on it.
	Foam Head form, Right side (no flash)