Hi Paul,
I'm with Slimbob. Get to a short tillering string and brace ASAP and stay away from the handle fades until last. Focus on the mid limbs first then scrape out to tips and fades last. Heat treat as you go. Nothing you can do about that wood discoloring so...screw it, just go.
It appears you've already laid out your handle and have the width increasing out from the grip through the fades to maximum in limb length. I'll throw in my thought...it appears like an overly long design. My perspective is that a 4" grip with 2" fades is plenty. I suppose if you had monster hands maybe another inch for the grip. Even at that, I barely hold the my wood bows when shooting, really only grabbing them with my middle finger and pointer...but I'll digress.
Hope you've been well.
