Arrange them in the order you want them on your quilt from top to bottom.
Fold your strip set piece together short ends to short ends and finger press to form a crease line.
Open your strip set it back up and cut down the middle along the fold line. One-piece will be the bottom half of your quilt and the other piece will be the top.
When you have this base piece of strips assembled you are going to cut it into two pieces vertically. Then cut your strip set in two 6.5” from the right-hand side.
Sew your accent strip right sides to right sides to the largest piece of your quilt top so that the strip crosses each of your previously sewn seams.
In this case you want your batting to be 24” square at a minimum. Mine was a bit bigger which is fine too as you will trim it down after quilting.