line's was on his chest, ofc, river gets his on the inside of his left forearm. cassia i think gets his on his right shoulderblade? needle gets his done on the back of his right hand. falkner gets his on the inside of his right bicep, bc it had to be more secret. choir isn't able to get his until after he meets back up with wi/wr, but then has it adapted into a full backpiece.