Hi...I found a flying geese ruler on the Missouri Star Quilt Co tutorial.....when I was looking to purchase one my size from my pattern 2.5 x 4.5 doesn't show up.....is this once again me confirming how new I am at this.....do these rulers only do two specific size geese or is it a range....and if so, would anyone know which size I should buy.......can you tell I am just so nervous to cut this beautiful fabric and do it wrong.....