1.1. look up a few reference photos and come up with an idea of how you want your jellyfish to look
1.2 grab your paper and pencil and make a rough outline of the jelly fish body.
for ours we made a bean shape
1.3 add small bumps to your jelly fish bottom for some shape
1.4 draw long lines for tentacle (optional)
1.5 (do 1.1- 1.4 again if you want to keep the original sketch) cut out the top of the jelly fish and leave to the side.