Make bows. Make more bows. Make still more bows.
Every time I make a bow, I learn something new.
And if you have a bad piece of wood, make the bow anyway. You'll learn more from a marginal piece of wood. Even if it breaks. The knowledge is still there.
Probably broke the first 20 bows I made. Then I sat down with a guy and he showed me what to do. It was like a light bulb was switched on.
I worked on my bow for two days, a 10 year old girl was in the same class, she made her bow in about 8 hours.
Don't you just hate child prodigies?