Hi there! The situation is that you've done an excellent job committing to a character, but you've missed the mark on the character concept. It sounds too much like a gentleman thief and not enough like the concept provided. What I would have done is added more aggression or more stoicism. It would have brought out more presence to his character. A character like this should make their presence well felt in a room and dominate a scene. Remember the purpose of acting is to get a reaction out of the audience and the other actors. A good way to get into this zone is actually straightforward. If you memorize the lines it'll sound much more impactful because you're no longer concerned about anything else other than trying to get the emotion from the audience and the other actor (even if they're not present with you.)