For an orange-pink candle with a white thread, I forget the exact cantation and I didn’t save it. Crayon or crayon (one of the eye color you want, the same color as your current eye color. I tried to change an eye color on a full moon. Then fill your mind with the color your eyes have right now and focus on that color for a minute or two.
My 2 daughters have medium blue eyes, but like you, they also have the yellow ring in the middle of their eye. However, I often respond by saying that whether a spell works or not really depends on the person who casts the spell.