Step 1: The Eyes

First draw two small curved lines, then draw a leaf shapes on top of the curved lines.

Step 2: The Head and Tentacles

Now draw a head shape around the eyes, then draw squiggly/curved lines at the bottom of the head for the tentacles.

Now you can add in a little mouth and add details to your eyes by drawing another curved line close to one side of your eyes on the inside

Now draw half circles in his eyes for the pupil, and shade the rest if the space in

To add more detail draw more tentacles in between the tentacles you drew beforehand add little circles for the suction cups.

Now your octopus is done!!! You could also add a little hat or anything you want to make your octopus unique