Looks good overall, but as Stik says, very artistic, not realistic at all. The decals are silvered pretty badly too.
The biggest issue is that the USMC did not use any UH-1D/H model Hueys in Vietnam. Their main helicopters were the CH-34 and CH-46. Late in the war they did use some short-bodied UH-1Ms, but no long-bodied H models as you have done.
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