Thanks for the answer, English Bob. Just to clarify, I do know that it's possible to keep the control cage, and that changes there will be usable as morphs. The question was more if I have to refine the mesh for modeling seams, creases and other details or if I should try to do this all without refinement.

Your picture above seems not to be modeled as SDS for example, otherwhise the crease would be smoothed, right?

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

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