If this ask was of a purely technical nature, the answer is that I vary, depending on what kind of picture it is. I’m not very impressed by the eyes I usually make; they mostly seem to consist of five lines or so. 

The thought process for them is more important to me. That way I can at least try to get a good variation and give each character their own snowflake look. Above is a very boiled down version of what goes on in my mind when I draw the eyes. I’m more sure about some characters than others…

Alex, Martin and Aaron belongs to xhakhal
The rest are mine.

(Yes, that’s me)