There were drawn 12 zodiac signs. Each sign belongs to one of the four elements: Fire is Aries, Leo, Sagittarius. Water is Cancer, Scorpio, Pisces. Earth is Taurus, Virgo, Capricorn. Air is Gemini, Libra, Aquarius.
From sketch to final
"The concept of the zodiac originated in Babylonian astrology, and was later influenced by Hellenistic culture. According to astrology, celestial phenomena relate to human activity on the principle of "as above, so below", so that the signs are held to represent characteristic modes of expression, or primary energy patterns indicating specific qualities of experience, through which planets manifest their dimension of experience."