That would leave you with 3 x 4 1/2 squares....and 3 inch triangles on the sides...should be close enough...
Or if you wanted it closer....this is hard to explain; but you could stitch on the sides of the two skinny pieces from side to side....hope you get that....so it would be going from side to side, but half way through the square piece.
Last edited by NT66; 06-13-2019 at 10:29 AM.