Very cool bow, that bark is a nice touch. I can see the skinny tips, more modest than some people's versoin of the Holmegaard but I think the actual Holmegaaard was not so pronounced in this respect. In any case you thinned the tips and left them stiff, this to me is the advantage of a Holmegaard. And you worked with osage, which let you do a relatively short bow for additional cast. Very nice job.
What sort of failure of wood did you experience? Was it in the area that went from bending to non-bending in the area of the outer limb? I've had trouble with that area on this design myself.