Here are some rules for visual content that we sometimes overlook
1. Colors - Less than more - Too many colors is distracting and takes away from the content that you are posting
2. Motion is important - Make sure when doing videos you don't look like a stiff robot.
3. Time - Less than More - No one will watch a long video so make it short and sweet.
4. Quality over and Quantity. This should be the number one rule. Don't post garbage.
Hope this helps