In this case, the big mistakes in presenting your numbers are
showing too many numbers
showing too few numbers
What we need is "just the right amount of numbers." Here is a guide to what works for me, and many of my colleagues.
Your numbers should be presented quarter-by-quarter over the first six or eight quarters after funding, and then yearly through year five.
If this is not your first round of funding then show the previous few quarters of history as well.
Please include these lines, adjusted as necessary for your business model.
Do NOT feel that you have to squeeze this into a PowerPoint slide with all the PPfluff (headers and footers) that squeezes this down to an eye-chart. Feel free to have a separate Excel spreadsheet handout which does not have all the extra nonsense. (See how I really feel about PowerPoint.)
When presenting your financials to VCs, you are revealing more than just a few numbers. You are showing that you understand (or don't):
what it takes to scale sales efforts
how long you think it will take to develop your product and get it through beta testing
the various components of your cost model
Yes, all VCs discount your numbers, but do not use that as an excuse for unreasonable projections. Feel free to reference any comparable companies that reached $100m of sales in year three of operations, and why you can do the same.
Yes, we may well want to see the gory multi-tabbed details later, but to start with this one page summary would be great. Please.