There are always going to be times when it doesn't flow as much as you were hoping. So of course I'm going to fail. And when I do fail I hope I fail better and better, again and again. I am happy to fail.
There are two ways to go about it. You can take a compass and draw a perfect circle and make two perfect eyes as neat as can be. Or you can do it freehand and have some fun with it. Like I did. Give it character.