8. Don't forget about audio!
Don't worry, we forget sometimes too! Sound is 50% of your video so neglecting it wouldn't be fair!
Sound effects can be a great way to make something comical or perhaps add suspense. Sound is best used to emphasise the visual parts of the video.
If you think of your favourite viral videos they will pretty much all have great sounds associated with them
Google can be your friend when looking for sound effects, give it a try!