I've worked on a lot of models and templates that contained cash flow waterfalls with multiple IRR hurdles, single IRR hurdles, multiple preferred return hurdles with simple interest, single hurdle preferred returns and everything you can think of in-between. There are some commonalities between good waterfalls as far as how you should lay out the formatting so that it is easy for investors to understand as well as anyone that needs to view them.
Work through every calculation section
Move from the underlying debt, tax, capital structure and market assumptions to the final WACC with each component clearly presented.