Dramatic presentation like the original -- well-done. The only tiny thing which throws me off a bit is the tiny bright spot under the neck -- it seems to attract unnecessary attention, and almost make it look oversharpened. I would try burning that spot a bit so it matches the clouds more closely.
I like having the snow in the pic. I would have like the model turned a bit more sideways (as was the original). It also seems like the dodging and burning isn't done quite as artistically....not as much "character" left in the sky. A very nice attempt, though. It stands well on it's own, and it is difficult to be compared to the original!
I'm surprised there weren't more versions actually - though i think it is a rashly high quality image to take on :-) Criticisms: the pose isn't as proud, as perfect as the original - this looks uncomfortable where Heida's model looks perfectly at ease. The burning of the sky is overdone - yes, even for a version of a Heida shot. Not bad beyond those things though.
I like the stone and sky... but feels something wrong with angel not sure what... i think head... she is looking somewhere away... and it doesnt shows power as looking on sky.