"It is always the novice who exaggerates."
My Dearest Bezoar,
I too, have been in your hooves. You are green, you are eager to please our Dark Lord and you want to start off by showing all your tricks. Please take it from one who knows -- simpler is better. You want your patient to not even notice that you have taken partial control of his body. You are to be the lunch he ate that does not agree with him; the wind that passes through his lips, the little moments he cannot remember. My Uncle Screwtape said it best, "Indeed, the safest road to hell is the gradual one..."
Now, about your recent possession antics: if you could refrain from spewing Latin from your patient's mouth in LATIN class, that is a good start. Not only did you spew Latin, you answered each question correctly and impressed the Enemy's pawn that sits next to your patient. We want to keep him away from her, because she will be the end of your patient should they fall in love -- if we cannot keep them in lust, that is. But we will swim that moat when we come to it.
You know I love you with an affection deeper than the Abyss, but please, dear fool, don't cause your patient to climb a building to rescue a cat -- that girl's cat! -- from a ledge. I hear he won the Parkour competition as well. Let us use that brain beneath those pretty horns of yours. Your patient and the girl have a date before Thanksgiving and I expect greater things out of you by then.
All my loathe,