Step 1: Begin with the hood by drawing a football shaped curve, open on one of the broad sides.
Step 2: Start the hood or bell margins by drawing 2 tall "U" shapes just inside the top of the hood.
Step 3: Draw a few more tall "U" shapes next to the first 2, to continue the hood.
Step 4: Complete the head (or hood) by adding more tall "U" shapes for the margins until you reach the other side of the hood.
Step 5: Draw the oral arms by adding several looping, squiggly lines of different lengths below the margins, some connected to the margins and some not.
Step 6: Finally, add several long and short lines around the oral armss for the tentacles.
Step 7: Your jellyfish is complete!
How to Draw a Jellyfish Head – Step-by-Step Tutorial