The best way is to set yourself up for success from the beginning. Spray the entire inside of the loaf pan with vegetable oil spray or coat with butter. Line the bottom with parchment paper after coating with spray. This will help the parchment paper stay in place. After baking, allow the cake to cool completely. Use a butter knife to run around the outsides of the pound cake. Get a baking rack ready and the pound cake should plop right out of the pan. I usually pop it out into the palm of my hand, then set it right on the baking rack for glazing.