Hi Retta, The little "Gumnut baby " print were only 3" squares( unfinished), so I had to build that up a bit as I loved Judys pattern -I'm not brilliant working things out but your 3 i/2" print square with the 1 1/2" white strip would make a 3 1/2 x 4 1/2 rectangle, then with the 1 1/2 " green strip you should end up with a 4 1/2 " square...so long as you end up with a square, you should be right.