Everything comes together in the Capstone: story, slides and delivery. You will draft a complete script of your presentation. With the advice of your peer readers, you will revise, rewrite, and complete it. Then the same thing will happen with your slides. And finally you will deliver it to a real audience recording it on camera and get valuable feedback from your peers.
If you are to revise some other work, please, write with an intention to help. Say what a peer should stop or start doing, add or remove from their script or slides.