If you hold your pencil in a clenched fist like you're preparing to stab the paper to death, that's how your art will look: harsh lines that are difficult to erase and shading that is rough. If you hold the pencil correctly, you will have the range of motion of your shoulder, elbow, wrist, and fingers at your disposal. Hold it in a clenched fist, and you cut off the ability for finesse that your fingers and wrist allow. If you already hold your pencil correctly, give yourself a jumping high-five! If not, work on it and stay tuned for the next lesson.