Anyone handy with CAD willing to draw up some plans with cut sheet?

I want to build one of these but longer and bigger with 2x6's. 6-7' long but trying to minimize waste using 2x6x12 construction redwood.



http://www.amazon.com/Merry-Garden-I...=droold-20#Ask

http://ecx.images-amazon.com/images/I/41o2XhikIOL.jpg