I did this portrait following as closely as I could Rembrandt’s approach to portrait painting. However he used oil paints and I use acrylics. Blending with acrylics is problematic as they dry so quickly so you have to paint afresh where planes join, although retarders help. His models were in person whereas I use photos, as do most of us given the hours and hours it takes to paint a portrait. Some do a combination of a sitting during which they take photos and work from them later. In the British national portrait competition they had a model and all the artists worked from photos while the sitter could move around freely and talk to the interviewer. Not all photos are professionally done so the lighting is not easy to deal with, as was the case with the photo I used here. The subject was in a snow scene, cheeks red here and there from the cold and hardly any shadows from the diffuse lighting.