My assignment was to make six photographs of one pot using only one light source. I photographed the pot six different ways, changing only the light. Then I made two photographs of a painting, one emphasizes the texture of the surface and the other one minimizes it. Next, I made a photo of a photo that is framed and under glass. Notice how there are no reflections or shadows. First will be six photos of one pot, then the painting, and last the glass framed photo.
See, no glass.
For my lighting I used a flashlight and a reflector with a few different colored gels. I also used a soft box and a regular light on a stand for the painting and frame pictures.