Take a Unit #1a and sew it to a Unit #3 like below. Make two of them and call them Unit #5

Sew a Unit #1 and a Unit #2 together to make something we’ll call Unit#6. It will look like this:

Make ten of them altogether.

Sew a 3″ square of background fabric to a triangle of backgroudn fabric like below:

Then sew another triangle to it so that it looks like this:

We’ll call this Unit #7 and you will need four of them.