hey, i'm doing castaway as well, and relating it to crossing the red sea. There ain't no way i'm just giving u notes on it, coz it took me time + effort to do them, but i'll offer some help. Firstly, have u actually tried sitting down with the movie and poem and comparing/contrasting them? That''s what i did to start off. I also made sure to take note of the film techniques used. I focused on things like the waves, the storm, a big focus on nature pretty much, on Wilson as an only companion, and Chuck's lack of control (such as his suicide attempt), to name a few. Hope it helps!