Here is what i took in the studio.
45/45 Lighting
Backlight
For this shot i placed a flash light underneath the object and set the camera to F 5.6 and the shutter speed was 0/3
Top Light
For this shot i positioned the light above the object. The settings for this shot were again F 5.6 and 0/3
High Key
I used 2 lights on this shot. One light source coming from either side of the object and turned the power on the lamp up to make it brighter. The settings used here were F 6.3 and the shutter speed was 1/50
Low Key