"Du er et eksempel for andre."

Translation: You are an example for others.

[Tordene]

Sometimes we say " an example to others ( to avoid repeating ) " regarding messing up.

[Serrer]

Could also be "role model" in this case possible?

[Luke_5.1991]

An "example" may be someone who messed up very badly and is anything but a role model.

[Ravnin]

It can also be used to have positive meaning.

And I would say that it is far more common for people to use it that way.

[Luke_5.1991]

I've added in "role model" as an alternative translation.