First off, I like the eagle headdress, though I think the texture may need more details.
Second, you've done a good job making parts of the Boudica outfit look different. Especially notable are the armbands, the bare midriff, and the lower clothing piece taken from Monty's outfit. My only suggestion here is that perhaps you might consider adding some sort of feathers to the shoulder pads to make them less like Boudica's, as those triangle parts that stick out really make me think of her.
Third, while I like the feathers, I think I would like them even more if they weren't the same colors and styles as those on Monty.
Fourth, it's hard to see how the face looks compared to the original Boudica one. The change of hair makes a difference, but somehow mixing up the nose or chin or some such thing might also be worth the effort for distinctiveness.
Fifth and finally, my thought on the survey question is that the the skulls look interesting, but kind of awkward. The "none" leaves the clothing too generic and similar to Boudica's, and the triangles end up looking like some sort of bizarre piercing job that I'd rather not think about too much.
Instead, how about shrinking the skulls, painting them gold, and placing three or so in a row across the neckline? It would be slightly "barbaric" and threatening, but at the same time, not so over-the-top as wearing a bra made of human heads.