Finnish origami artist Juho Könkkölä spends around fifty hours scoring and folding a single 95cm² sheet of Wenzhou rice paper before he even begins sculpting the otherwise unbroken, uncut surface.
Using a combination of wet and dry origami techniques, he creates (among many other things) 28cm tall samurai warriors complete with plated armour, traditional helmet, and swords. Sez he:
There are several hundreds of steps to fold it from the square and there are probably thousands of individual folds
He talks more about his process here.