Self-Review
For my poster I chose to go with the film District 9. As part of the guidelines behind creating these posters, basing designs off of the original ad campaigns or promotional materials was strongly discouraged; however, because of my research into the film I've noticed that I subconsciously borrowed several elements from one of the original poster's compositions, as seen below:

That being said, both draw several recurring thematic elements from the film, which was my intent; the fencing "closing off" the background or foreground, the ship looming in the distance, etc. I was specifically trying to flip the advertisement's message on its head, however: the ad campaign largely relied on the idea that "the aliens were the monsters all along," which is in no way true in the actual film. Rather than being exclusionary, the aliens, or "Prawns," were forced into slums evocative of the District Six area in Apartheid-era Africa. I was shooting for an "inside looking out" perspective with my poster, illustrating the events truly depicted within the film. As far as the actual composition goes, I believe there's more that could be done - increasing the contrast, "filling in" the ship more, and so on - but I ultimately believe it serves its purpose compositionally. As far as marketability, that is, whether or not the poster would "make people want to see it," I honestly think it would be less effective than the "outside looking in" perspective of the original. The idea of a full-length feature film with a sci-fi spin focusing on elements like segregation and Apartheid being presented ingenuously in marketing would likely reel in far less average movie goers than painting the film as a by-the-book sci-fi action film.
_____________________________________
Review of Angel Williams
I think Angel's design serves its purpose well enough. There are a handful of mechanical issues, such as the doorknob's handle looking a little big and the top engravings on the wardrobe's curvature lacking a "groove" (horizontal line) equivalent to the one at the base of the door, but I don't think they hinder the composition on a surface level. I wish there was a little more going on in terms of the actual Lion, Witch and Wardrobe fronts, but if this design took a more minimalist angle and occupied a smaller amount of the negative space I could absolutely see the idea working out more effectively.