Going Back To Basics

I've been struggling with my painting lately and I think my troubles are coming from my rendering skills.  So I'm going back to the basics. I don't necessarily want to paint realistic portraits but I do want to capture my subjects likeness. I feel like I really need to practice seeing and then interpreting everything correctly to give myself a good strong foundation of skills to then apply to my paintings and hopefully see some improvement.  All that said, this is my first drawing with those intentions:

13" x 8 1/2", graphite on paper

 And this is a painting I did last week during an open life drawing session with a 2 1/2 hour pose:

8" x 10", oil on primed paper