Crooketarrow gave you good advice. The only thing I would add to that is when you start exercising the limbs and starting to bend them, keep an eye out for hinges or weak spots. When you see a hinge area, don't pull it any further until you get it corrected by getting the rest of limb bending and doing its share of the work. I apologize for some of my smart @$$ remarks and I hope you don't take offense at them. You have to understand, about every six months or so, some young fella such as yourself gets on here asks for advice on how to make a pine bow or some other folly and then ignores all advice offered when it isn't what he wants to hear. We are always eager to help if we can. If you work with the folks trying to help you, it will go much easier. If you bull up, you will probably find yourself stumbling through on your own. Josh