Strike fear into the hearts of your enemies, or add some Apothecary class to your Alchemy shop.
Step 1: Materials
Small ball (1" or so) ((A marble, or plastic ball will work, but I used wooden ones I found))
Base coat, paint (Whatever color you want) ((I use white))
Second color (I use yellow)
Third color (I use orange)
Red duct tape
Step 2: The Sclera
Paint the wooden ball with your base coat.
Step 3: The Ocular Nerve
Take a piece of red tape and cut several triangles out of one of the short sides.
Carefully make a long tube by wrapping the tube so the two long sides are overlapping, but make sure you don't fold it. You should have a hollow tube.
Apply to the eye by placing the frayed edges on the ball one at a time.
Twist the rest of the tube so it looks cool.
Step 4: The Pupil
Using the Sharpie, color a small black dot on the eye. (HINT on a real eye, the pupil is just barely offset from the ocular nerve, and not in a perfect line.)
Step 5: The Iris
Using your second color, make a ring around the pupil.
Make a second ring around the first with the third color.
Now, take your second color, and draw small lines from the outer ring into the inner ring, and continue until you are satisfied.
Finnish with a thin black line around the Iris.