How to get pen off a door?

-Ok I colored bluetack in with blue pen and used it to stick a small thin canvas on my door and the pen stained my door and I can't get it off and my door is hollow wooden with that smooth paint stuff I don't know what it's called and Ive tried nail polish remover but that only smudged it and faded it a bit and soap and water was no good

I'm only 13 so I can't paint over it and I can't tell my dad cause he worked very hard on this house and he'll get really angry it's been onthe door for about a yearTry deoderant with alcohol as an ingredient. Lynx might do it