I save space in my kitchen storage by stacking pots and pans but they tend to scratch each other. I used to line them with paper towels which tend to fold and get out of shape easily because they are thin. I bought cheap felt, cut them to size, and now all my pans specially the porcelain coated ones are well protected.
measure the material by putting it under the pan or skillet
allowing 2 inches at the top
allowing 2 inches at the top
pinch and cut notches where they bunch,
spacing them equally, about 6 to seven in all