I have been thinking about modeling the Shroud of Turin. I have been starting off with a flat plane in a modeling program of mine, but I will admit that my skill is not there yet. I will keep at it.
The idea was to make the image of Christ either rise up out of the plane or even trickier invert the image so you can see it when looking strait at it but when you rotate it you see the image actually sink inward.
I have been using this pic as a reference http://www.forteantimes.com/gallery/images/shroud.jpg
I though this might make a good challenge for the talent here at ZbrushCentral