Glare

I have no idea why I'm posting this at 2am, but here goes. Just

another of the model people seem to like a lot..

I really like this portrait...makes me think the girl is hiding something...like her confidence.

I can't really say why, but this one works better than your 'what's she hiding from' shot. I'm not crazy about it, but I like this one more than the other. Maybe it's the monochrome, maybe the tone, maybe the slightly more subdued pose. I'm not sure. Keep it up, I think you are on to something here, and I want to see where it leads you.