You can do it and I think the easiest one is a lean to style one so you can use a whole piece on the top rather than building rafters, look up on the internet I think you can do it, ask around at church, a community center the basics are you center the board in the middle of the wall and measure out so they are spaced evenly you will do great,,also look up the coop on this that made from pallets it is fun...that would good