Pitch is close enough, the lowered voice is fine for the characters age and it doesn't detract from the delivery itself. The delivery is well paced as always, however I think this could benefit from a more cold, unfeeling tone on your part as the emoting is just too excited in the initial and final portions. The threatening and somewhat angry tone you have here is a little off as the character should be more cold, and unforgiving in his demeanor. This is an unfortunate occurrence as you did deliver the character well, but it's hampered by a bit too much emoting on your part.