Manny, you aiming for a Victorian style longbow or an English warbow style. If warbow reduce that handle a bit and make sure it only starts bending in the handle for the last 3 inches of the bow. Bow will taper on the belly from handle to the tips where the tip width and depth will be almost 1:1. Also, there is a trick to rounding out the belly I like to use. True up the belly and sides of the bow. Then, mark every 4 inches allong each limb and figure out then draw measure the width of the bow at each point allong the limb and then find mark this at each point for the depthe on each side. Now, connect the dots. Reduce then take off the wood from the belly and true it up and make it flat on the belly. Now find the center line at each four inch increment on the belly and mark it. Connect the dots again. Here is the fun part! Round off the corners making sure not to take down the center line fo the bow. Keep the reduction even olong both sides of the bow and continue to check the floor tiller. You will have an even crown down the center of the bow this way.
Now if the tiller is off at some point after this. Reduce the crown top a bit, redraw the line and true up the crown again. This will get the large reduction done for floor tillering quiclkly while maintaining the "D" profile. When rough tillering is done only fine tiller on the tillering tree reduce bow from the sides evenly.
I'm probably preaching to the choir but just thought I would give you a heads up on how I do it!
David T