The one on the right I had the hardest time on, today. I couldn't make heads or tails of the way his face worked, and my results are less than stunning because of it.
In this one I was trying to push the line of action further again. The more experimental studies usually end up far yuckier than the conservative ones, but I think that's just part of growth. When I have more time I'll overlay and self-crit, but right now I am up past my bedtime.