Asset Management Case Study

I have a case study to do for a boutique asset manager I am interviewing at. I haven't build exhibits with this sort of focus yet and was looking for someone to point me in the right direction. 

The prompt is pretty basic: Put together a balance sheet, asset allocation, and 3 year statement of cash flows for a client. I was given 3 account statements, 2 brokerage accounts and a 401k account. Generating these for an org is one thing, but for an asset manager that works with individuals is where my questions come into play. Is there specific formatting that comes with building exhibits for a clients personal assets that differs from doing this for a public company? 

I am looking for a general push in the right direction here, I put together the balance sheet and supporting schedules pretty easily. But the cash flows are giving me issues, specifically the assumptions you need to build them accurately. Any info will help, thanks to anyone who takes a minute to read this!