Hello, Keetah, welcome to SoM!
The eye-color changing spells will never work. That is fantasy. No spell will physically alter you in such a way. Magick, like anything else, does not defy natural law or make the impossible suddenly possible. Perhaps you should look into studying what is called "the basics" before jumping into spellcasting.
You can scroll down to the bottom lefthand corner of this page, and look under the "Help" section. I definitely recommend checking into the "Tips" link, as it provides some simple tips for spellcasting. FAQs are the Frequently Asked Questions, and Newbies is Newbie Central, which you may find beneficial. I also recommend clicking the "Articles" tab at the top left of the page, and reading some of the featured articles related to spellcasting.
Best of luck!