Connie, after reading through these post I am seeing all kinds of hints to keep your ruler from slipping but nothing addressing your flying geese not being correct size. Are they to big to small?? Where you place the lines on your ruler on the fabric will make a difference in correct sizing. I made this mistake for years cutting strips by placing the size line at the edge of the fabric instead of on the fabric. So my strips were always the width of the line off in size. Have you watched some you-tube videos on flying geese? Try the different methods and find what works for you. Also for flying geese a rotating mat might help so you never have to lift the fabric. Good luck and I am sure you will figure out something that works for you.