Cut some of your lights and darks into strips and use Thangles to make them into HST's. Just think of it as learning to use the Thangles and not making a quilt. One light strip, one dark, sew them together and don't worry about what they look like because after all, you aren't going to use them. When you're done and get them pressed, you won't be able to throw them away so just sew them together into a dolly quilt. Remember, baby steps, baby steps. ;-) I'm the same way and it's taken me a long time to be able to do it. I had a hard time making blocks that all the pieces were different prints even when the colors coordinated. Now, not so much.