the thickness are hard to evaluate from a photo, that's where you have to get a feel for how much the stave is bending compared to the weight you are putting on it and how much the wood will ultimately take.
you could hang something on the string to get the deflection, and weight it on a scale?
the width profile would be a photo as seen from ahead or behind showing your width tapers, sorry for being confusing.
where is it taking the set, a few inches out on the left limb? sometimes it helps to trace the stave or board before starting in order to have a reference to lay the bow alongside to be able to see just where easily