Designing on a flat surface often leads to surprises once the stencil is applied to a curved limb. 3D models solve several professional pain points:
Standard round brushes break down on 3D models due to polygon stretching. You need dynamic brushes. I recommend: 3d model tattoo procreate
Before diving into the "how," let's look at the "why." Traditional flash sheets are flat. Human bodies are not. Designing on a flat surface often leads to