Video Editing Class
Trelby can help you write a script/screenplay with the right formatting.
Plan your shots with a storyboard. This will save you time when filming, because you can see what you need to shoot.
My advice: Just get the footage (Lots of it!). Don't worry about it being perfect.
This is about practicing, and seeing a project through.
Lighting
Remember the practice. Whilst important, use natural light where possible.
Editing whilst between filming sessions, can sometimes expose footage you need to re-shoot, or give you ideas for new shots.
Better to find out earlier than later.