My ninth painting and third portrait, on a 30x40cm cardboard canvas. It took me almost 9 hours in two parts. (I don't step back often enough from my painting for sure!) The photography I used for the painting, a girl from India this time, is one that seems to be from National Geographic: https://www.pinterest.dk/pin/203436108146200331/
I wanted to go more in the details but I had two big issues, which refrained to get me further. First, a defect in the fabric despite the priming I need to understand (the rip on the forehead), the second the complexity of color mixing, particularly on the canvas for the skin tones. I stopped when the girl's face looked good enough from a small distance, and then focused on finish her hair and eyes.
In term of techniques, I did not do imprimatura as Ferne Sirois suggested but got back to painting dynamic lines directly. Very early I got to finger painting with black and white.
Interestingly I messed the proportions too and at the very beginning, the girl was looking like a teenager, with smaller eyes and thinner nose. A trajectory that was easy to fix, until colors are added.