To change the teeth from normal to vampire, the first thing I did was pick the pen tool and outlined the single tooth. Then I made a selection and changed the feather radius to zero. Then I modified the feather radius to one. After that I made a new layer via copy. Then I transformed the selection to warp so that I could drag it to a point. After that I doubled clicked so that the selection went away. Then I selcted the eraser tool so that I could clean up the tooth. After that I did the same thing to the other tooth.
Photoshop Eye Tutorial
Original (Before Product)
To change my eye color from green and brown to green and purple I did this: The first thing you need to do