Here's a photo showing the actual sizes of the ovals used to make the punch bunny. My instructions confused some people and I thought this might explain the sizes better.
You don't have to use ovals exactly this size. These are made the dimensions of the SU punches used to do the original bunny. If you are cutting the ovals with your Expression, just pick a size that you like and you can adjust the size of the circles used for the body to work with your size,
My Expression never gets used without Design Studio so I had no problems adjusting the width of the oval to match the SU punches.