This is the original image:
ZSpheres to figure out where all the limbs go:
And some rough sculpting to flesh out the form:
And the final image with side by side comparison. I didn't follow the sculpt exactly, since there were some points where it wasn't completely successful, and my first sketch attempt was not so great. But this is my second version, and I paid closer attention to the original image, and I think it is a reasonable approximation of a 90 degree transposition.
Well, lots of classes this semester and lots of projects on the go. I should be posting some leprous work soon, a ZBrush vertebra, and perhaps some Unity work in the near future too.