On this padded-shoulder suit jacket I'm making, I use Shrinkwrap with vertex groups to tightly fit only the sleeves, since the body of the jacket has a good fit already. However, everything in the vertex group is instantly 100% fitted to the arm--is there a way to taper the fit with just the Shrinkwrap modifier? (I somewhat achieved what I wanted via Bridge Edge Loops, but I may need a better explanation of its features to use it well.)
The influence of a Shrinkwrap modifier is weighted by its target vertex-group, if it has one. All the usual tools in Weight-Painting are available to modify the vertex-weights.. blurring.. normalising..
Once a group exists, and if at least one of its vertices is selected, vertex-weights can be set in Edit Mode, for more control.