Below are the lighting aspects of the elements of design.
Soft Light- This photo was achieved by bouncing the light off a reflector.
Hard Light- My desk lamp was angled towards the glass, casting the large shadow.
Shaft of Light- I used a quickly made cone over a speed light to make a somewhat directional light over the desk.
Back Light- I used the flash to blow out the background and create the silhouette.
Side Light- the light source was up on a trip-pod on the right.
Front Light- the flash was on camera and turned around, being bounced off a reflector.
Warm Light
Cool Light