Wow, those are some really cool B&W shots of the granite and wood. Let me go over soem thought with you:
1. Three corners - nice convergence on the vertical lines. Did you use a really wide angle to distort them some and converge more. Let's say something like 20-24mm or so??
2. Blade - nice use of the rule of thirds with the placement of the column, off angles, and lead in and out lines of the roof.
3. Center - is that you in the photo? Its a little static, but enjoyable to look at. Very symetrical with lots of horizontal lines to draw the eye around to look at things within the photo. The glass window or skylight adds a nice break to the surroundings and helps the photo out.
4 Narrow - nice perspective. Different, yet very creative. My favorite. Nice and straight lead-in lline on the left, with a rounded lead-out on the right using the column.
5 - Light Drops - maybe if you took that one a little farther back to include the whoel corner in the front of the photo it would look a little better. And maybe a little more off center to the left and either higher or lower in the frame.
6 - Wood - kind of boring to me. It's just some parts of two doors without anything else in it. It is cut off on some of the geometrical shapes in the door. Maybe include a little more or less to make it work better.
Hope this crititique helps. You asked for it, you got it.