I am on I phone but will try to answer. I used a. Tool 2 3/4
Square (made by husband) so that is size of cut block. I used squares on all whites too...it keeps tesselation going. Probably misspelled that but no dictionary in car. After finishing, I considered 2 changes. First leaving off top green so star is nestled into green and also considered putting some sort of triangle! Truth, i'm happy as is. Leaving off top green would have made it squatter!