To transfer the colored pictures on the gray or black fabric, I ordered Iron On Dark T-shirt photo transfer paper. I've mentioned on my blog before this particular photo transfer paper that I love but it's for use on light or white fabric. This is the link for the light transfer paper.
It's hard to see but that picture was ironed onto the gray fabric, which you can see around the white edges. I'm using gray and black for some of the backing on the panels. I'm happy with how the photo transferred to the fabric. No, I'm not using T-shirt fabric for the backing. Just 100% cotton, but this paper works great on cotton.
I'll be putting the 'action' picture of Nick from one of his Lacrosse games as well as his Lacrosse team for 2021 on panels.
So, this will be my weekend project...to finish securing two more panels and then start the free motion work! Needs to be finished the 3rd week in May! Yikes!