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.