I’m making a piece of armor to use a game in a game engine and I’ve been generating by own custom seamless textures to come up with a pattern. I’m trying to create a gambeson, and thus I need a quilted like pattern very much like this:

However, no matter how I unwrap my model, I’m constantly getting seams or the UV’s just seem to stretch for some reason. I’ve also tried using UV Squares addon but that doesn’t seem to help much either.
Here are some of the problems:



Can someone tell me what it is I’m doing wrong? I just can’t seem to figure it out. I’ve tried asking this around other places but nobody answers back and I’m becoming desperate about this.