Building a Cash Flow Model

Hi,

I have started Building a Cash Flow Model for my Excel Spread Sheet and I need advice on how to decide the structure of my Model. So far I have made Module's made after the Yellow Tabs in my Excel Model and made the Line Items of my Modules the First Columns in my Excel Sheets (The things that I need to calculate and look for). I'm confused on how I should pick the List Topics for my Model. Please Advice, Pic's of Cash Flow Model is attached. 

Thank you