Writing words with light turned out to be simpler than I thought. All it took was a dark room a 10 second shutter and aperture at f5.3. Check out my first practice shots below.

Random Movement

Random Movement

The light is from the LED flash of a mobile phone.

An Actual Word

An Actual Word

I plan to improve upon this and experiment more with colours and different exposures.

Experiment 1: Depth of Field