These are all perfect suggestions. Drawing on the Right Side of the Brain is a widely used resource, I used it myself in an art class. To draw what you feel and think is great because it helps you develop a tone and style, and can be a release. And, one that I wish I had thought of earlier, is to copy. I did this for a while too, copying expressions out of comics. I am not a good artist, but I do know how people begin and how they improve.
It sounds like those videos addressed the best and most important step. To begin drawing, one must draw. Draw draw draw. If you get the "I don't know what to draw" feeling, like all of us do, it's a mental block. Move through it. Your goal is to draw. Draw anything. Draw your cell phone. Draw the chair in front of you. Draw the shape of your dog's nose. Your hand. The tear in the knee of your jeans. All the art you have seen in video games, anime, movies, in museums and shops, they all came from an artist that put in the time to draw. They focused on their weaknesses and improved afterward, but they all started the same way- by starting.