Cody, being relatively new to primitive bow making myself I suggest you take a deep breath and slow down. You need to find some local wood (trees) that are decent for bows and mess a few up. There's nothing that can teach you better than working down a stave , slowly, and looking at the arc when you bend it. First, when it's still thick and heavy (floor tiller) then shave off more wood slowly and keep looking at the curvature, shaving off wood on the belly where it's not bending much. At some point you can place a string on it and keep testing that bend in the limbs. It should be even all along the length of the limbs.
I don't have Osage either but found that my best local trees are Hackberry, Elm and Huisache as well as Southern Live Oak. I'm sure there are other great bow woods in your neck of the woods. Keep reading posts on this site and listen to the advice you get! Good luck and most of all...Have FUN!
Tom