Hello Michael!
Thank you for looking and your critique.
You are right, flat. The original is more flat.

(The digital picture is more reddish than the original, clouds over clouds here.)
I have problems with skin tones. I would like to paint with layers, but haven't time enough. Alla prima was more difficult (I think) to find the right skin tone. Every book says 3, 4 (max.5) paints to mix and have ready. I've mixed more than paint.

It was terrible. I think there's no ONE recipe for skin. Skin tone practice (over glazing, too), better likeness, and composition (the arms) are the next step.
Two new canvases are ready to go. Thumbs up.
Your close-ups (on HP) are very helpful and GREAT, of course.
Many thanks again,
Leslie