you used the term arf, to people that scratch build this means a model that is almost finished, already covered, and just needs some minor assembly.

If you have put together a kit of stick parts, covered it yourself, and it flew, then perhaps a simple scratch built airplane would be OK for you.

I would not build anything any more complex then the kit I just finished. You would not have the experience for a war bird from plans at this point.

But for a simple airplane you may be OK.

I use stencil cut outs. I make my stencils from the frosty plastic note book covers kids buy for school. I use this cut out as a stiff template to transfer a line tracing to the wood part.

Go for it. Thats how you learn is to try.