I'm not sure if this falls more into the domain of graphic design or 3DCG so I figured I'll just ask the experts at image manipulations first. Basically, I made a 3D scene in Blender of a paper bag so a friend of mine can use in their design.
Problem is, my friend isn't familiar with 3D packages, so they asked me if I can export it into a PSD file that can be used in mockup, where they can slap their tidbits like logos and text on and the creases can be "overlaid" over their design, and I have no idea how to start with this. Anyone got ideas how I can achieve this? Even what I should look up as a starting point would be appreciated.