>>2411826Do what the guy above me said.
Then do pic related. This is blender 2.79b though, so get that.
Small issue though, I already made the image so I'm not gonna revise it, but basically don't just "select all" on step 15, but: select the entire mesh in edit mode, select all of its UVs in the "UV/Image editor", choose a random image so all UVs get assigned to it, remove the image from the UVs by clicking the X button so they get assigned to nothing, then select ONLY the head and proceed to step 16.