This step by step diy article is about how to build double shed doors. after building a large storage shed, you need to take care of the other steps, such as building the door and attaching the trims. if you want to have a proper access to the shed, you should consider building a pair of double doors, as this will provide lots of advantages.. Building a shed door is a good all-around exercise in general carpentry and design. the door must be square and fit into the opening of the shed. the door should be properly braced with a z pattern. by building this type of door you will also learn a little bit about general construction principles.. This step by step diy woodworking project is about how to build double shed doors plans. the project features instructions for building double shed doors for the 12