M. Brindos
I was using a dried up Micron .005 pen, but if I didn't get one pupil centered I had to get the paint out quickly before it dried. I mitigated this by adding a gloss first so I wouldn't ruin the "whites" of the eyes if I had to wash out my mistake. The pencil works best on a matte surface and mostly wipes out with just a damp cotton bud if I screw up.
Depending on the definition around the eyes the watered down graphite can actually line the edges of the eye and give it a bit of a border.
Dodgy, you don't think much of your figure painting skills, but you are no ameture. You're really advanced in your skills.
I'm watching with great interest.