6. Add the Final Touches Prev Next Use a felt-tip pen to trace the lines you want to keep. Erase any extra pencil lines. Explore the ocean's depths with our next drawing project. Learn to draw a submarine. Up Next How to Draw Impossible Shapes How to Draw a Woman in an Oversized Sweater in 5 Steps How to Draw a Woman in a Bathing Suit in 5 Steps How to Draw Dump Trucks in 11 Steps How to Draw Cathedrals in 5 Steps See all How to Draw articles. Go to the HowStuffWorks home page.