I’ve done it again, and this time I got it sort of right. A double exposure, with half of the photo paper target masked in each exposure. First the upper body exposed, then the legs. So, my head and torso are pretty still because the sunlight was intense, and I had only to remain immobile for twenty-five seconds, but the problem with strong light and direct exposure to paper is that the contrasts are way too strong.
The image is not as wonderful as I had wanted, of course, not least because the precision of my image splitter is way off, leading to an overexposed middle band that got illuminated in both sessions. With a camera made of foam board, and a lot of little add-ons to keep the paper in place, I’m not going to try to make this better.