OK, I'm a knife user - not maker so I don't commonly comment in this forum (even though I look at every post). With that said, I'm not nuts about the blade design. Probably just me and I'll admit, I don't typically like bowies anyway.
With that said, I think your handle is perfect in size, shape and composition. I really love the way you incorparated the antler and the wedge shape you used. Your attention to detail and finish look excellent. The walnut was a beautiful choice and the knife just flows. Your friend is very lucky and should be very proud to own this knife.
Please don't take the blade comment as too big a jib. I simply feel that with your talent, a blade of your design will be more pleasing on some level. Hopefully it won't be too long before you are able to make that a reality.