Oh my goodness… little artists don’t always choose the best surface
Good news: in most cases the stain can be removed!
Here's what you need to do:
Alcohol (70%) or disinfectant: Soak a clean cloth and gently wipe away pen marks.
Acetone-free wipes or nail polish remover: Effective on faux leather (test on a small area first).
Baking soda + water: Make a light paste and rub in gently.