Hey bro, I’m glad to, really, it’s my pleasure. However — unfortunately — my help was wrong. The gray background problem does matter. In fact, it matters so much that the all progress is virtually halted in this course because of it. I say “virtually” because we can use your DISP maps that you provided in the source files. But without those, the student is unable to re-reproduce your workflow because of the gray b/g problem. If the head is gray with zero information, and the background is also gray, then there is nothing visible for PS to make a mask with. Hope this makes sense. A Google search will turn up quite a few thread-links discussing this same problem, all of which still have no solution (I scoured blender.org, blendernation, blenderartists.org, stackexchange, and several others, reading through the entire thread of each).
