If you like this method look into CD's that have been out forever called Trianglations 2.0, 3.0 or now 4.0
Much cheaper to buy one CD that ranges from sizes as small as 2 inches up to 7 inch half sq triangles, flying geese and several other things like Hr glass...send the size from your computer to your printer...prints up exactly what cake mix offers and layer your two fabrics and follow the sew lines ...