5-10 min quick sketches. Any suggestions for consistent likeness?

I really like second page. It's like I can feel how you are searching for the feeling of the poses and deciding when to turn into cross contour flows. Nice stuff!

Hands can be tough and good on you for challenging yourself. I might try to be really deliberate about grouping the fingers so you get the gestural feel you want. The fourth drawing is really nice because you were getting a sense of planes of the forms - keep that solid feeling going