First impressions are important. I assure you, the three of us here all have our own varieties of... [She can't help but let a chuckle leak out.] ...lunacy.

Regarding your horn: Given that you are a wizard - assumedly human? Forgive me if I am mistaken - then you should have little problem working out the process. Consider your horn to be your magical focus; like a wand that has been placed upon your head.