Well, I just don't like the ones you see for sale in shops, they are flimsy and expensive, my DIY shed is neither of these things.
Additionally it is exactly the size I want, and built to my spec.
...and I think it looks nice - if you like the cube look.
You'll find additional info here: http://www.yourmissus.com/shed/
Step 1: Preparation
Both of these are big, so I'll be needing a shed with wide doors. I also wanted a square shed, most sheds in the DIY shops are rectangular.
I also wanted a shed with a reasonably high door, so I don't have to duck to get in - a reasonably high door also means a reasonably high ceiling. I wanted a pavillion type roof because they look cool, and because flat roofs are generally boring and are a leak just waiting to happen.
Don't you just hate sheds that wobble or worse move in the wind? Mine doesn't wobble!
It doesn't wobble because the shed has four four inch corner posts that are integral to the shed, but are also sunk 2 feet into the ground at all 4 corners. This makes for a very secure and stable shed.
It is this idea that really sets my shed design apart from other people's.
The first step of building a shed is to choose the location, I used a few lengths of wood to mark it out full size and also to get an idea of level.
Once I had decided where the shed was going I spent a few minutes viewing the location from various parts of the house and garden to make sure I was happy with it.