Most kit plans don't show the ribs or formers in profile. When you buy builders plans from someone like MAN plans section they have every part needed shown in profile for you. I take mine to Kinko's and have an extra set of plans made then use those to cut up as templates that will go over my wood. I can either draw the parts on the wood or just cut and paste the parts from the plans onto the wood then cut the kit. That's the difference between builders plans and kit plans.