These are some drawings I did with Photoshop, using a Wacom tablet connected to a Macintosh PowerBook 520
I used to work at a video game company and one of the people in the art department arranged to have figure models come pose for the artists. I was the only one showing up with an Artz pad. Most people were using charcoal or pastels.

If I hurried I could sometimes complete an outline of the shadows before the time was up. I would then spend hours to complete the picture, using the outlines of the shadows and my memory. Such fond memories.