Fun With FantaMorph

This appears to work well if, like in the example, you wish to do a small warp. However it is absolutely horrible if you are trying to do a large one. I am attempting to morph an object larger in one direction. I get the image around it still warping, horrible discoloration in areas. I have played a...

I am trying to warp just a small part of the image in the center. However when I play it, it deforms quite a large section. I managed to see a bit of what it is doing by showing "triangles." How do I get it to smoothly warp just the small section in the middle. For example. Say the picture is of a w...