I've made HST's using a rectangle instead of a square. It actually uses a little bit less fabric because there are no dog ears on the two ends. I have notes on it but don't know where to find it here now. Maybe someone else will remember that. You add fabric to only one side only. If you want 2 inch finished HST's, your starting rectangle will be 2 1/2 inches by about 3", but I'm not sure about the 3".