How to bend a bamboo into a bow and arrow without deformation after bending?

Choose fresh bamboo, flatten the inside and outside, then fix the bamboo into a certain radian with a bow string (others are also acceptable), then bake it with a small torch, and dry it in the shade for a week after baking. This is the most basic bamboo bow and it can be used.

If you want something better, you must draw it. Painting is a technical job. I can't teach you this if I can't fix it. ...