definitely for beginners as there are more complex ways to make eye color changes even better! Thanks for sharing
The outcome isn't realistic, but if someone else does this I am sure you can spend a bit more time playing with the hue/saturation colors to create a more realistic color. Good tut, but yeah this is for beginners.
Here is a more advance method http://www.heathrowe.com/tuts/eyecolor.asp Using this method allows you to be more creative with the effects eg include gradients, shine, and other special effects.
did you check the above link Change eyes color? I think it's more realistic. specially with dark eyes color which is more difficult to change.
it really helpfull but not for me only for those who have recently born in the history of Photoshop. Anyways nice effort keep it up.