Wipe only in one direction...no cleanup yet paint is not dry enough!
Here is my attempt, I do not use a ruling pen, I use a pinstriping brush and either a "high" quality nail polish or "One-shot" sign painters paint.
I will lightly skim the excess while the paint is still wet...I do this in order to minimize the amount of paint I will need to clean up after its dried.
Then as already suggested above, I use just a drop (so almost dry) mineral spirits or acetone on a block that is tightly wrapped with either a paper towel or the sacrificial t-shirt. I also make sure that the surface of the towel or "t" is as flat as possible in order to only wipe the areas that need paint to be removed.
Works for me.
Ben