Painting from life

Need to come up with more original titles. 3 and one half hours, 24"x20" acrylic on canvas from life.

Main thought is that I need to be more consistent: shadows in the highlights too dark and similarly the highlights in the shadows need to be darker, but in doing this I don't want to lose the saturation of colour (which seems to happen when I paint over). Here was what it looked like after 1.5 hours (mostly drawing but in someways I prefer the colours).