Okay so here is my issue and I do not even know if I am in the right place when it comes for asking for help here. But with that said, I am GM who run's an online tabletop and since I have started maybe three months ago now I have slowly been trying to learn how to make maps for encounters and the like. At this time I am trying to build a map that has two main sections a cavern type area and a factory area. The way I found online teaches me how to build a map uses GIMP's built in patterns but most of those are really ugly and I would rather make my own textures to use. So I go on and make some cave walls but I cannot figure out how do make this texture and then move it to the lines I drew for the walls. I am not sure if there is another way to do things, if I can, hell I am not even 100% sure I am using the right terms to describe my struggle. So any help would be very nice.