Step 6: Draw two more wavy lines. These will be guides for the squid's tentacles, so they should be longer. Draw the line lightly at first to decide what path you want the tentacles to take. When you have the path you want, darken it slightly. To make this drawing simpler, draw the arms and tentacles short and straight. To make it more challenging, make the arms longer and wavier. Squid have eight arms plus two tentacles. The remaining arms will be added later to avoid confusion.

That's it for the initial sketch! From this point on, press harder with your pencil to get a more defined sketch.

Step 7: Draw two small circles on the top and bottom of the head for the eyes. The circle at the top should be a bit smaller because of the perspective of the turned head. Inside each eye, draw another circle that's a bit smaller than the eye for the squid's irises. Also draw a tiny circle to represent glare and a bigger dot in the middle for the pupils. Shade in the rest of the irises for extra detail. Use a value that's lighter than the pupils to differentiate between them.

Step 8: Use the initial circle as a guide to draw the squid's head around the eyes. Draw the sides of the squid's head narrower. On the bottom part, add a small tube-like shape for the siphon, which is used like jet propulsion.

Step 9: Use the remaining shapes as guides to draw the rest of the squid's body and fin. Follow the basic path of the guide and make the fin wavier as you darken it to get a sense of motion. Darken the edges of the arc to complete the squid's body except for the portion at the bottom where the fin overlaps.