>>110353242Expressive eye shapes and contracting and dilating pupils. Extra interesting irises (glow effect, gradient, shapes)
Tasteful character design. Smooth jaws, small noses. James Bond/Mafia character designs are some of the most beautiful you'll ever see. High fantasy can also have some neat designs, mostly with the elves.
Neat cloth designs which are easy to identify and don't clutter.
A nice color palette with plenty of balanced proportions and interesting shapes.
Memorable design choices which instantly identify your character. A specific haircut, a logo, a suit.
Change of clothes are nice too, but often people forget about them if the facial features and body shapes are kept the same.