Very nice idea. But the lady didn't know she was being framed, otherwise she wouldn't clasp her hands in front of her face which then wouldn't come out as an elephant trunk in this really good idea.
I like the idea, and I think it would be even better if less of the photo was taken up by the blurred background, and if the highlights weren't blown on the foreground.
The blow out on the ring spoils what would otherwise be a great idea and shot, maybe play with the highlights as the shirt in the background is also a bit bright. Well done and good luck.
6 - Good use of shallow DOF. Criticism; looks like a few 'blown' areas on the ring/stone and nail. Nice and simple composition and the coloring is nice. Just perhaps a different angle/pose of the fingers and ring plus a variation in lighting, make this better in my opinion. Looks like she has her hands to her face, but that is not easily discernable, so perhaps 'allowing that in' a bit more somehow, who knows.