I think your plan is a good one. Fix it and get it right. I find that most new bowyers cannot tell you the tiller shape they are after. If you cant see it before hand there is little chance of achieving it later. Badger is right in that you went much to far with too much not right in the tiller. Take a 4 inch straight edge and run it along the belly on each limb. Check the gap as you move it along from handle to tip. It should be a consistently even gap all the way, save for the first inch or so at the handle and where the tip stiffens up. Left limb on yours will show a big gap mid limb, flattening out to near no gap in both directions. That's where your bend is, no where else. Get the rest of the limb (gap) even with the straight edge. The right limb suffers from some of the same issues so ditto the straight edge. When the gap is consistent on both limbs, you will have circular tiller shape. The stiff handle will not be part of the circle, so the handle and fades will be flat, but it should begin bending just past the fade and continue that ark until just before the stiff part of the tip. You wont have any weight left on it at that, but you will have achieved a decent tiller. Study that shape, compare it to like bows on here and see where you can improve a little next go. Shoot for that shape on your next one the minute you begin to cut any wood away. Before you ever start tillering really.