@Osla
I think your idea for the pointy hair could work.
The only other idea I have is to make one little ponytail from the two sides...
\ /
o
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like Pebbles Flintstone, and use hairgel from the roots to the rubberband.
When it dries, Undo the rubberband and part hair carefully.
^^
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hairspray the rest into the right shape. Use folded notecards to hold it up while the hairspray dries.
((awful "pictures" but I can't think of how else to explain it))