To build a shed door with plywood is long process because, you have to make both frame of shed door and then you have to cut the plywood for making door. you have to join wood frame to door with. Building a plywood door for your shed can be done by any person with basic skills, if the main techniques and professional tools are used. you can adjust the design of the door by adding diagonal trims to the plywood panel, especially if you want to create a traditional barn style shed.. When your shed doors don't close properly, is time to replace them. but how to measure make and install new light plywood shed door? this instructable show a simple way to make it..