On my journey to understanding how to draw Stephen, the first thing that I did was trace over his face in various photos to learn his face and skeletal structure of his body (proportions).
The second phase was figuring out his basic color palette as best as I could, considering there are no color photos to sample from except his photo with David Hockney in the 1970s. His hair turned white in his 20s and dyed it with henna and other shades later, so impossible to say. I stared for hours at various dark golden hair that would match and the blue-green eye color of every Tennant I could find, settling on Colin. This is as close as I believe I could get based on guessing alone. It's said that he had over 40 eye shadow palettes and used to dye his hair purple, so purple eye shadow is a possibility. Makeup is sampled from actual makeup from the time period. It was stated that he had crimson lipstick in "Serious Pleasures", which I made it slightly pink to possibly have someone misinterpret it as magenta. 😊 He seems to favor pinkish shades. I tried to replicate the gold dust in his hair to make it shine. I'll never know if I'm close to correct. LOL
This started as a simple photo colorization project and ended as a full painting. I painted over everything except the background. The original photo was so blurry and pixelated, I couldn't let it stand the way it was.