Are you going to cut your shape profiles before you start to tiller? Also, how long is your board? It looks very short... not an easy first tiller. If I was you, I would have forgotten about the glue-on handle, and just make a simple bendy-handle bow. When you say... "I've shaved my limbs down", what do you mean? You've taken wood off the belly already? If so, stop until you've got your profile shape cut. Good luck... make some sawdust, and see what happens!!