Well, show us what you got and we'll tell you what needs to change.
(First tip's free: Pose figures/people/animals out beforehand with some basic lines so you know what goes where and how long it is. That helps a lot to keep a focus on the overall picture.)
A full A4 page is quite a task you're going for here. I approve.
Edit: "ignore the haters"? Preemptive kneejerk reaction?