Yeah I think just futzing with the cape a bit should fix that problem.
As for the tusks, I just made them out of a couple different thicknesses of styrene strips. The actual tusks are a bit narrower in the middle, but it's not really necessary to sculpt that way. I found that once you paint the rounded end silver, the highlights kinda make the tips look bigger anyway.
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And I tried to take some closeups of the helmet for you to show the tusks, but had trouble getting any good ones.
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Again fantastic job ! You've just takin the orginal figure up to a whole new level