The toughest and most important part of building a shed is finding the right plans. Sure you can just start building without plans, but do you know how it will look when you are done? Or you can search for free plans, but are they designed right? What I recommend is finding plans, even if it means you have to pay a little. Make sure that sample plans are provided so you know what you are getting. Do not make a purchase just because they show lots of nice sheds but no sample of the actual plans you will be buying. Look for the following before you decide to purchase:
Finding MyShedPlans seemed too good to be true; 12k shed plans, 3-D renderings, detailed material lists, but wait, there's more! Hundreds of useful guides, woodworking books, and project ideas ranging from birdhouses to bridges. And what was more, was the promise of an easy download and immediate access to boundless amounts of material so I could be right on my way to a sharp new shed.

Among our builder plans, we have developed a wide range of shed designs, which we offer in form of DIY plans. If you purchase them, you will receive a detailed shed blueprints and building instructions, from the foundations to the roof, with precise measurements in both metric and imperial systems and full list of materials required for the shed. Our garden sheds, storage sheds and gazebo plans are created in a way to make the construction process comprehensive and easy to build for anyone. Especially easy are the lean-to shed plans, narrow but spacious, very practical and possible to attach to any building or wall.

Build the framework for all four walls. To account for the fact that the front and back walls are different from each other (due to the doorframe in the front) and the side walls must both be sloped (to prevent rain from collecting on the roof), each of these will have to be tackled somewhat differently. It’s easiest to construct the back first, the front second, and the two sides last, as shown in the numbered image below. See How to Frame a Wall for more information before you read the instructions below.[5]

how to build a shed