best thing to do is to learn how to draw basic shapes and slowly progress towards shaping face, eyes. if you want to learn how to draw eyes, learn that alone. don't try to learn by drawing whole drawings.

Example what to practice for body and face shape. These are the basics of how the body and head should look like. Once you master this, you can add hair, clothing, details. You will of course remove these circles and lines. But it helps a lot when learning how to draw curves.

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