If you peel back a little bit before cutting out your shape, it will be easier to remove.

Great tip! Also, if you forget to peel, scoring down the middle with a pin helps also.

I use the pin score after it's ironed on the fabric. Works every time. I would love, however, to be able to tell which side is the 'right' side on every piece. Sometimes one corner sticks one way and another corner of the same sheet sticks on the opposite paper (I use steam a seam lite).