I am fascinated by the effect of light on most things but especially on shiny sparkly things like glass and satin. This is often a nuisance when I am trying to get in and out of a daily drawing challenge fast or certainly within the half hour daily commitment to draw.
This drawing, with wash, took me longer than that.. I could have gone on for ever but decided I have a life!
It reminded what fun abstract painters must have. This prism was all about little shapes and values bumping next to each other.