Paint Together thread in the Portraiture Forum at Wet Canvas. You can click on the link to see the reference photo.
I didn't go for values in this sketch but concentrated more on placement, shape of features and lines, so the drawing can be transferred to watercolor paper. It took a lot of time to do this with lots of erasing and redrawing lines. I may have his head tilted a bit too far but overall I'm pleased with the sketch.
I don't think I could go to a life drawing class because it takes me so long just to get feature placement lined up lol. Still it would a challenge and good practice to actually draw and paint from life.