There are many things but why it's the first thing you look for a guy/girl? For me it's his feet, that would be great for me to judge whether his little friends are clean.
the first thing i look for is maybe face, that is really normal i guess, much of people will see for face first. and then i will look for the personality, hope she not just beauty but also have good personality
The same way like you,first absorted by the face feature.then I will look for the eye second.
I think who has the clean eye also have a kind heart.
I think good personal charter is more important
than good feature.
