In Beijing, we have reliable sunlight only half the year. To make my blueprints, I need strong sunlight and no rain. In spring, the pressure is on to create work which I've designed over the winter.
Below: a video of Cyanotype printing on the rooftop of my studio, illustrating the process from fresh painting (the photochemicals are green) to quickly layering negatives before they are exposed to the sun and turn blue.
Best played with sound off -