Thanks for the example, I will be trying the third face option too then, more of a smile would indeed make a face radiate more kindness.
The eye thing I shall also look into, usually I think for some reason that bigger irises are cuter/younger.

The darker eyes definitely seem true, that I noticed indeed, those full white eyes look kind of evil, or the intense like you said.

Round pupils seem cuter if you ask me, though as I was searching on google for Miqo'te looks I saw a topic that actually managed to make a slitted eyes version look rather cute even, though it indeed did have a bit darker eyes as in a version of blue.

I hope to succeed (after all this time and now being back haha), it's rather nice to pull of a look/char that makes you feel, 'Yes! This is it!'.