When I was making all the raggy quilts in 2002, I found myself adding little scraps of fabric to clothing. This was a cream colored denim shirt.
If I remember right, I stitched the 9 patch on pocket and right through the shirt making the pocket unusable. But I don't use those pockets anyway. I am pretty sure I top stitched over the cream colored thread with a blue thread on the pocket, collar, and the front placket.
Why not make a plain shirt look like a quilt? As if I didn't have enough quilted items.