Cat's Eye Sharingan

This is just something I threw together for a friend of mine who is doing a fanfiction of Sakura and Sasuke getting turned into catgirls. He didn't know how a sharingan would look with a slitted pupil since three tomoe wouldn't really work around a straight line without it looking weird so a fourth tomoe is added, which can be explained away due to the mutations the catgirlification caused.

Did this entirely in MS Paint with a mouse in around an hour or two