Very creepy and sad, that why I like this! I don't have much to say about this. The metal of her heart it's very well done. It looks like a very well oiled machine. A cold heart. Her expression is very apathic with a mix of sadness. I would just correct a little thing, one of her eyes looks a bit bigger that the other. But it's nothing very exagerated! ^^
As for the rest. The simple and rusty background constrasts perfectly with her perfect metal heart. Lovely!
I thought about adding more mechanical detail around her heart but I wanted the heart to really stand out as a focal point. I could have just made darker mechanical detail, but I figured it was fine as is.
Why yes I am! And thank you. I wasn't going for a dead look in here eyes, but I guess that's not necessarely a bad thing. I think my heart is so blackened it's hard not to have a hint of creepy come out in my style even when I don't try now. Hahahaha.