Either way, for a first try and just eyeballing it, I thought it came out pretty cute. Doesn't seem as cute in the pictures, but in person it's neat. It's nearly the weight of a newborn with all those rolled up diapers, it has a big diaper padded butt, and I shaped the diapers so you could feel the shoulders, arms, knees, feet, butt, etc.
Here it is, mostly finished aside from the finishing touches that I'm still figuring out.
EDIT: here's the picture I went off of. It used a onesie/sock combo instead of a sleeper, and it's in newborn size (mine is 9 m size!) so it's much smaller: