Can threading to the jaw make you look worse/more full in the face?

Hi I’m considering having PDO threads lower face but I’m worried if it can actually make jowls worse or is this impossible. I’ve seen a couple of pictures where people have said it made their faces look fuller/fatter rather than lifted. Not sure if this would of just been initial swelling or if it genuinely comes with the risk of giving you worse jowls/a chubbier appearance long term. I have a very slim face with slight jowls so it seems like a good option for me but want to be very careful….