>>1966950>>1969583>>1969639Here is a SIMPLE version of it - I didnt' copy the colors, or adjust the lines for accuracy, but you get the gist from these steps.
I:
* Made an elipse
* Put color in it
* Added in a radial gradient
* Moved the radial to where I wanted it
* Copied a plain-color elipse, then moved and cut it to shape.
* Changed the color to white.
* Made the shape transparent
* Added in the pupil.
From here, you can adjust things so the hilight is where you want it, etc. like in the image, but this is the basics of the method.