Okay so I got a couple of  questions on how I draw faces, and basically it depends on the personality of the character for me, but it doesnt have to!!

Any base can work,

There are more kinds of bases I just couldn't think of any
I usually use references tho!! Depending on the style

Then I just add the rest of the features and uuuh, I do the lineart after that

If you need me to clear something up just ask away!!