We have to get you in there to see what all this is about, but it won't be easy. The first step will be to get a proper uniform for you.
Then, we'll worry about doing your makeup.
Find one of the overseers at Dun Argol, kill him, and bring back his uniform. If you get blood on it, you'll have only yourself to blame.
Did you get the uniform?
<Kilian takes the uniform from you.>
This should do. I won't have time to sew on a little patch with '<name>' embroidered on it or anything, but anyone looking closely at you should be convinced that you're an overseer by the time we're done with you.