Form a ball of clay for the planet Jupiter. Although the planet is made from rock and gasses, it is seen as a round planet and will be easier to construct accordingly. If desired, etch bands into the surface of the round planet and the name Jupiter into the bottom of the planet for easy identification, using a push pin, needle or toothpick. If making the planet as part of the solar system, make it to scale, which would be 11 times larger than planet Earth. If planning to hang the planet, consider sticking a paperclip in the clay, with a loop protruding, that can be used to hang it.
Bake the clay model of Jupiter according to the manufacturer's instructions, or set the clay out to dry. Keep the clay model safe until it is ready to paint.
Paint the clay model of Jupiter. Blue bands are rarely seen. The planet appears largely white with red, yellow and brown bands. If you have etched bands into the planet's surface, color each band with a separate color. Use a picture of Jupiter as reference to recreate believable bands. Add Jupiter's Great Red Spot to the planet which is seen as a red oval on the planet. The Great Red Spot is believed to be an ongoing hurricane covering a range up to three times the size of planet earth, making it a distinguishing feature that belongs on the clay model.
Allow the painted planet time to dry. The planet Jupiter can now be hung up, displayed or crafted into a mobile solar system.