It's all part of the learning curve!
Pearl is dead right.
Never, ever sand a chrysaled area as it WILL get worse. Again as Pearl said it chrysaled because it was bending too much and or had a stiff section just tipward. The extra bit of a ring just next to your chrysal is a sign of this.
Your thicker limb was likely deflexed somewhere along its length, thus making it look weak and you leaving it thick to make things even.
When you have a stave where the tips don't line up it is a very good idea to rough out the bow then use either dry heat or steam to make corrections and even out the limbs prior to starting tillering.
Hickory must be dry to avoid a lot of set and it also likes a good heat treating of the belly.
