It's fantasy, why not make your characters beautiful and flawless?
Besides immersion, ''flawless'' is extremely boring. Do you remember those countless faces of super models you've seen in beauty magazines, with those statistically perfect angles, perfect eye widths and perfect noses? I don't even remember one.
Why is that? Little flaws, disproportion in features and quirks add character, makes you more interesting and makes your face more memorable which ultimately increases beauty.
For example, Cassandra with the scar and her angular jaw is more beautiful than with perfect smooth skin and a facial bone structure that is more in line with the general beauty standards. Those features add character and make her instantly more interesting and beautiful.