>>9383113Use posca paint markers. It's just acrylic paint in a pen. I don't use it for faceups because even the thin tips are too chunky and you can't really layer the paint so it can look super streaky and thin at places, but if you're just doing simplistic symbols that's meant to emulate markers anyway, just use Posca pens. Don't use other pens or markers because they stain due to the different formula, but Posca is perfect for what you need.
I've used Poscas on vinyl for years and it hasn't bled like other things, it's just really shitty for nice looking face ups.