I've encountered quite a few slaves/subs who are eager to wear my mark.
I have refused all.
This is because I do not take permanent marking lightly. It's easy enough to brand someone, but I do not want someone to wear my mark who is not truly, 100% my slave. I'm taking into consideration the responsibility of having someone wear my name on them for life. I am not a narcissist who finds joy in having others wear my mark regardless of affiliation/relationship- when I choose to mark, it will mean something significant. It is not a novelty, it is serious.
We will both know when this is the appropriate next step. You haven't gotten it because you are not there yet. So earn it.