Synchronized Squares Quilt Along

So for my first quilt along, I chose the Summer House fabric line. I love the colors and bold patterns!!

Here are my 7.5 inch squares ready to go, and a pile of lovely 2.5 inch leftover pieces which are going to be sewn together for a scrappy binding.

Here are the fabrics I am thinking of using on the backing of the quilt...but yardage isn't available until next month. It's going to be my first pieced back, can't wait to see how that works out...