How to make photofits of your characters

When I was planning out my second novel, Let Us Be True, I knew I didn’t want to give too many physical details about the main characters, Ralf and Elsa, but I still wanted to know exactly what they looked like myself, so that I could imagine how they might appear to each other and how they would fit together as a couple.

I decided to make photofits of each of them, and spent a long time figuring out a way of doing it without any complicated software (in the end, I used PowerPoint). I started...