Knowing the tools of your trade is what you makes a artist. It's not enough to know that you would like to have the shadow there and have the face pushed to the foreground, that's just being aware of the design space. To be an artist you also need to know how to navigate the design space - know how to use the colours, brushes, vertices - to actually arrive at the place you intend. That means that you know how to use the tools of your trade so that this stroke or infill completes the brow to create the gaze you were aiming for.

Just selecting from a random sampling makes you a curator at best. You know where you want to go, but don't know how to do that. If luck is not in your favor, you will never arrive. And you're wholly dependent on luck to get there.