Kengar, when you wash the flesh it is like what I call wet brushing..you get soem paint then two dips in the water...test on a paper or tile then paint over the flesh. Do not use ink for this stage...at least I don't, I use straight paints.
I have used a micropen in the past and never had a problem with them but a friend said that his tattoo on his figure with the micro pen faded after 2-3yrs.
i tease him about it myself cause the tats, eyes and such that I have used the pen for have never faded in over 10yrs of use. i used to use another pen called a Unibal Micoro Pen and I bought real high quality ink the pen took longer to clean and it wasn't worth it. Micro pens are recommended by Jen and it was at her suggestion I tried it out. The best Advice is to finish the model with aminimum of a good 3 layers of finish. I use 1 dull, 1 gloss and 2 more dull. This finishing holds through almost anything.
Later,
Darius