If you are looking for realism, the single best advice I can give is that you need to practice drawing what you see vs what you think you see. Humans think in t

If you are looking for realism, the single best advice I can give is that you need to practice drawing what you see vs what you think you see. Humans think in terms of icons and memes, but resist the urge. When you see a nose on a face, you'll want to draw an icon of a nose, with an outline. But resist, and really look at what you're seeing. A camera or a printer doesn't draw a nose, it prints a series of consecutive values that look exactly like a nose, and so should you. Outlining should be for reference and nothing else. If you get into the world of color, the same thing happens. When it comes time to color skin, for example, you go reaching for the meme color of skin. But really look at it; you're a camera. That skin right there actually has blue in it. And yellow. And red. Stop seeing what you think you see, and see what is actually there.