One thing. If you want her to have a helmet, you may need to give her a hair slot. You said she was a spy in a lower comment, and a helmet that guards all angles makes more sense for practical purposes, BUT it doesn't work too well concerning design. Velvet's got a lot of hair. A LOT. that's not going to cooperate with a tight fitting helmet, especially if it closes automatically like Iron Man. In a real world instance, while the helmet would close fine, her hair would get stuck in the cracks, and it would look ridiculous, though it'd make for a funny scene. For something like that, she'll need a shorter haircut, or at least wear it up so it won't interfere with the helmet's use.
Another alternative, you could have her wear her hair in a ponytail, as to still give her a hair slot, but to also shrink the vulnerable space significantly.