Would m'sieur care for an aperitif?

Technical information: Shot with a Nikon D40 and Nikkor 18-55mm f/3.5-5.6 lens at 55mm, in manual exposure mode. Aperture f/16, shutter 1/2 sec, ISO 200. Lit with an SB-400 from the right and above, set to 1/8 power and shot through a home-made diffuser. White paper taped to a cookie sheet placed to the left for a reflector. Background is lit with a flashlight, shining through a pilsner glass and the bottom of a brandy snifter. I used Aperture 3 for RAW conversion and to clone out a speck of dust on the sensor, otherwise this is straight out of the camera.

Thoughts for improvement: Because I don't have a proper lightstand, I ended up holding the flash and diffuser with one hand while I triggered the shutter with the other. This meant that I had to hold the flash really close to the diffuser, which created a hot spot instead of evenly lighting the diffuser. You can see that in the catchlights on the glasses. I could get around this by either getting a proper lighting setup or by using the shutter release timer, freeing up both hands for the flash and diffuser. I think I might also like to try using a wider aperture—leaving the back two glasses out of focus might give more of a feeling of depth to the picture.