I just bought some plans for a stitch and glue project and I have a few questions that hopefully I can get some direction on.

1. The plans do not include full size patterns - just scale drawings.
How do I get the cut lines onto the plywood accurately?

2. How do I make the larger than 8 foot pieces for the sides? The plans I bought talk about a skarf joint - does anyone have plans for a jig or fixture?

I will continue on with my reserch - but if anyone can chime in that would be cool - thanks