What you want to present is something very different, a lessons learned pitch: Here’s what we thought, here’s what we did, here’s what we found, so here’s what we are going to do next. Don’t show up with just, “Here’s my idea.” Or worse, “Here’s where I am today.” Tell the narrative of what you originally think and what you learned.

Steve Blank On The Broken Relationship Between Investors And VCs | Fast Company