Bev, it looks just like a block, whatever size you want to make it.
Then take sashing, whatever width you want. Cut 2. Then cut 4 squares the size (squared) of the sashing. Meaning, if your sashing is 2 inches, then cut your 4 squares 2 inches each.
Make a 4 patch out of your 4 squares, sew 2 sashings together, then sew them onto the block top.
Sew 2 more sashings together to make 2 more sets...WITHOUT the 4 patch. Sew those to top and bottom of square. Then sew sashing with 4 patch on the sides.
Have I lost you yet?