The tiller of your bow........ not good, hinged with straight limbs from the hinges out.
Do you have a tillering gizmo? This neat little tool will show you the error in your ways and prevent hinges in the future.
Go to the Primitive Archer site and look in the how to section, I have a complete how to make and use one tutorial posted there.
I did have the same tutorial here but got banned for telling the truth, (quickly reinstated when the facts came out). Who ever banned me (thanks Rob) deleted a multitude of bow making tutorials I had posted here, including the gizmo one.
This is a tillering gizmo, one of the fancy ones I put on the St Jude Auction.