I haven't found anything regarding how to get rid of color only on some small parts... for example the face on a miniature. Currently I've "mispainted" a white flame on a Space Hulk Terminator and way too much white on the flame, so it's very thick, haha ok I'll show an image of my damn mistake:
Well i think there would be two ways i'd tackle this one, firstly is just to paint it back to the shoulder pad colour around the edges to reduce the amount of colour and neaten the edges. The other is just to remove all the paint and redo the whole model, but that is a bit more extreme , it's very difficult to remove paint from a specific area. I've only done it on metal models where i've used acetone on an old brush and just painted it on slowly. But acetone is only really recommended on metal models as it melts plastic.
Maybe I'll try to get rid of it with a very fine-graned sandpaper. But I won't chop off all the paint, on the whole miniature It took me quite some time to paint the miniature
yep, that's what I will do now... but so there's no chance to get rid of color on faces or some more detailled parts if you don't want to repaint the whole miniature?
In detailed places for me its better to remove all, as for faces in plastic its hard since you dont want to cut or "remove a nose", in metal you can always try acetone but you must be really carefull.
Good luck
A safer option might be to use isopropyl alcohol. (also known as rubbing alcohol, available in the first aid section at most drug stores.) It will not melt plastics or resins, but does a pretty good job of softening acrylic paints. I have done this several times.
Pour some into a small container and dip a junk brush (preferably one with firm bristles) into it. Apply to the selected area and let it soften a little, then scrub it a little with the same junk brush. Repeat. It takes a few minutes, but eventually the paint will start to peel up and you can push it back away from the newly exposed metal. Then it's just a matter of scraping off the remaining goo with a wooden toothpick. You could probably do the scraping with a hobby knife or a scalpel, but then you risk damaging the mini.
Good luck, and let us know how things turn out!
Jen