Okay I should have made my question clearer. I already know how to work with existing transmaps with a paint program, as I do this all the time. But I'm talking about how to create a brand new transmap for an .OBJ that doesn't already have one of any kind to start with. Specifically, clothing items not from DAZ that don't come with any. I can get UV Mapper to create templates from the object files, but the problem is that those templates have all sorts of criss-crossing gridlines and seams all over them, which makes them impossible to work with in a paint application unless I want to spend 400 hours flood-filling each and every tiny little square of space created by those intersecting gridlines. I will try to upload examples here of two different transmaps Little Dragon once posted for the same item, to give a better picture of what I mean. See below.