Man, I really don't know which one's the right category for this... But since this was some kind of a concept, I hope it's okay.
Anyways, recently, I've read something in an astrological book, it said something pretty interesting about the 4 elements of the zodiac. According to this book:
the zodiac signs of the element Fire (Aries, Leo, Sagittarius) live in "the world of fantasy",
the zodiac signs of the element Earth (Taurus, Virgo, Capricorn) live in "the world of reality",
the zodiac signs of the element Air (Gemini, Libra, Aquarius) live in "the world of reason", and
the zodiac signs of the element Water (Cancer, Scorpio, Pisces) live in "the world of feelings".
Guess there could be some truth in it. And it made me think of a concept like this. For the illustration of the 4 elements, I used several brushes & filters in Photoshop, drawing with my tablet. I drew the fire with a little help from this tutorial ([link]) by . Of course, my fire doesn't look half as awesome as it does there...
Anyways, I hope you like it.

EDIT: For all those who liked it, here are the individual concepts of each element:
Fire (Aries, Leo & Sagittarius) - [link]
Earth (Taurus, Virgo & Capricorn) - [link]
Air (Gemini, Libra & Aquarius) - [link]
Water (Cancer, Scorpio & Pisces) - [link]