Photospin.com has a neat two-minute video tutorial for a tummy tuck using the Liquify filter
There’s a neat tutorial out on the web for creating a tummy tuck using the Liquify filter; specifically, its Push Left Tool. It’s a really neat trick, and one that reminds us of the strength of the Liquify filter.
You can see the before and after images here.
Again, here is the link.

