Artist Study: Drew Struzan, Composition

This week we focused on composition by looking at movie posters he's done. I chose this unused Harry Potter movie poster art:

My best guess for the composition style in this picture would be something like a radial set up, with the focus on Harry  and leading out with the smaller characters.
This was my initial sketch for placement blocking:

Then I did some overall lining to try and refine the shapes:

And added some flat color for blocking:

Then I went to work on adding shadows, highlights, cleaned up color areas, glowing effects, and cleaned up some of the line work for the final picture: