Talk to your existing customers. They are the ones who already know, like, and trust you enough to buy what you're selling. Their input could help you create content that attracts more of the similar audience. Literally set aside 30 minutes to call them and ask why they hired your product to solve a problem and what content they'd like to see you produce.
Also think about what emotion you want your story to impart on the viewer as you craft your story. Do you want them to laugh? Should they feel inspired or happy after watching your video? Whatever emotion you want your viewers to have, think about that as you write your script. Everything from the props and the location to the colors and the wardrobe will communicate this, so choose every detail wisely!
When it comes time to shoot, clear out unnecessary people from the room and turn off the overhead lights. With your three-point lighting setup, there will be no need for those harsh fluorescents. When — and only when — everything is set up, call in your talent. There's nothing worse than being nervous, and then having to anxiously watch as lights are turned on and the camera is tested.