Wow, this is really kinda dark. In order to make B/W really work you need a wide tonal range which is lacking in this shot. It also looks like you used the on camera flash. This will always produce harsh shadows that are usually unatractive especially when the subject is close to the background as in this case. Move the subject away from the background and use other lighting (I never use the on camera flash...) and this would work better!
TC
I think this would looks better without the shadows...maybe try stepping away a bit from the backdrop? Also, this photo is begging for more contrast...3
Didn't quite pull this one off - as I can still see part of your thumb. Also the image is a bit grainy. It's a cool idea and well composed, but it doesn't really grab me.
First Impression: This is a nice concept, that could have been carried well (and was if I remember correctly).
Was I fooled? No, but that is not really the issue here. What damages it here in scoring is the image quality.
Good Luck.