RE: Blueprints to wood
Yep, any method that allows you to accurately copy the parts from the plans to the wood is the "right" one, as long as it's comfortable for you to use. I've even put carbon paper between the plans and the wood and traced the part directly onto the wood. That works, too. I then final-sand the part and compare it to the plans.
It all depends upon how many copies of that part you need, and what tools you have available. Tracing is one for a one-off part, but a good wood, metal, or plastic template is a good idea for the many same-size wing ribs you need when you build that large wing with a rectangular planform.