Sequoia capital offers the best advice here so follow it.
“EVERY BUSINESS STARTS WITH A BLINKING CURSOR OR BLANK SHEET OF PAPER. THE BEST FOUNDERS ARE CLEAR THINKERS. THEY DON’T NEED MANY WORDS, CHARTS, SPREADSHEETS OR SLIDES TO EXPRESS THEIR IDEAS. MANY OF THEM JUST USED THIS SIMPLE OUTLINE.” – Sequoia Capital
Use their handy outline and keep it really simple.
I am in no way affiliated with them or them with me. Use at your own risk. You might get replaced by their board and have to wait until your blackout date passes to sell your very low valued stock. Go for it!