If you want to scratch build, but don't want to try to draw plans here is a site that has some for free. My favorite price.
http://members.fortunecity.co.uk/slmohr/rcinterest3.htm The plans are in DXF form so you need a 2d drafting program to work with them. I found TurboCAD learning edition as a free download Just do a web search, I don't have the link right now. I'm currently working on a scratch built slope soarer flying wing with 100" wing span.