Before we start i would like to point out that it looks sloppy, but that's because that's the style that the original artist wanted it. First start by drawing the space of the head and body. Draw the circle for the eyes and then add the legs as shown.
Draw the mouth (lips and teeth); notice how the mouth is the same shape as the head, but not as tall and wide. Also add lines to make the leg.
Draw the ears (including the ear "hole"), the hands, the neck, and the feet.
This step is adding the details to Ickis. The lines and wrinkles kind of give him more texture and shape. After you erase all the extra lines, you are done. To tell you the truth out of all the monsters on the show i think he's the least scary. (i was a big fan when i was little)