Illumination.

This one started as a question rather than a brief: what happens to gel and liquid when the only light comes from underneath, shot straight down rather than lit from in front. Overhead framing removes the usual cues for shape. There's no falling shadow, no obvious top or bottom, so backlit liquid gel photography like this has to read entirely through colour, translucency and the way light travels through the material rather than off it. I layered coloured gel sheets under moving liquid on a glass plate, backlit from below, and worked the camera directly overhead so each frame reads as a flat plane of texture rather than a lit object. Small changes in how the liquid pooled or moved produced entirely different patterns: bubble clusters, veins, ribbons, ridges.