9. Add the Final Touches
Use a felt-tip pen to trace over the lines you want to keep, and erase the extra pencil lines. Congratulations! Now that you're a pro, you can teach others how to draw rollers.
While your new roller is busy flattening out man-made materials like asphalt and concrete, the super-powerful excavator gets ready to scoop up tons of materials created by nature.
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In the next article, learn how to draw the peculiar looking, but powerful, excavator.