Thought I'd share how I kinda go about doing these movie studies. Some of you guys might want to see the process.
I basically choose a simple palette and values that match the image when I squint my eyes.
I then start adding more color and add the figures with simple strokes
I continue to refine adding bigger details
then I concentrate on the smaller details to bring it to a close
I take my time with these as i try to get better at matching colors and values