To add to the last post, you might want to use the animated version of shirnkwrap. It is in Motion Module under Effects/AnimatedShrinkWrap.
This will make the effect "persistant" so that you can adjust the target and inner and out wrapper to see what happens. Once you like what you have you can copy the surface, or delete the effect handle. If you are interested in this effect, you might check out Surface Deformations too.
IMPORTANT: Hit the "R" key to update the screen so you can see the results of your changes.
Hope this helps,
Urp