Truck in the Photoshop2

I would like to have a black and white design on my truck. Mainly like a yin-yang on the hood with a Celtic knot, or tribal art around it going down the sides to the hatch in back. However I am not the greatest at drawing out anything. This is where you come in! If your bored then Photoshop in something that looks cool. Ill have hood, side, and rear pictures posted. Only thing I ask is for permission to use any cool ideas when I go to paint. Have fun!