I do it like Mirwin with the following additions. Before ironing on the hinges (made up like he did) I iron a strip of covering over the entire length of the area to be hinged on both the moveable and fixed surfaces. Then iron on the hinges. Do all this before covering any portion of the surface. Now, when you put on the covering after the hinges are ironed on, the final covering goes over the top of all the hinges which helps prevent them from ever comming loose. The strip you ironed on prior to placing the hinges prevents any bare wood from being exposed.