Sorry to hear that you got ripped off on that stave. (and you did get ripped off) That's the kind of stave that you throw into a deal for free to see if you might get a bow out if it. You should be able to get a straight, clean osage stave for $50-$100. Anything more than that and there should be something truly exceptional about the stave. There's likely a bow in that stave but I don't think you're doing yourself a favor by trying to coax a first bow out of that without hands-on guidance. We can do our best from pictures but you really need to have your hands on a stave like that to know what to do with it. My advice would be to set it aside for now and get yourself a nice, clean and reasonably priced stave that wont give you major obstacles for your first bow build. If you can find a source for a good stave, send me a message and I'll point you towards someone that will shoot straight with you.