Oh. Grab 2 wood species thick enough to resaw veneers from and wide enough to cover you bow limb. Make a pattern, a lot are a soft s curve, Cut out on bandsaw and fine tune with whatever sanding options you have until you get perfect fit, you can now add some fancy mosaic strip, or other thin laminations as you glue the block up. Square up the block when youre done, and resaw the face that has the pattern. Grind it to thickness and there is your veneer.
thats a clip of someone squaring one up