So, we have lots of things to convey ruins in the maker, but nothing were the walls are irregular or anything. At least not that match the RTP. I spent the week making this one to match the gray brick walls in the dungeon. a lot of space because I do plan to add as I go or if anyone else has an edit to share.
NOTE: This sheet is NOT made to be used in the tile editor. So disclaimer now, if you use it and try to make a map by using the in game...