Mobile apps assignment documentation. I’ve already made the app just document it

I’m working on a mobile-apps assignment and I need a full PowerPoint deck built from scratch. I’ll hand over a concise brief with all the talking points; your job is to translate that material into a clean, visually consistent presentation of more than 20 slides... (Budget: €30 - €250 EUR, Jobs: App Design, App Development, Graphic Design, Icon Design, Mobile App Development, Photoshop, Powerpoint, UI / User Interface, Visual Design)