Let's be realistic here. In a 10 minutes interview with a person, what will have the most impact on your impression: social awkwardness and uncomfortable looks, or abstract "moral qualities"?
"social awkwardness and uncomfortable looks" can be judged in seconds. If 5 seconds of the interview is spent grok'ing appearance and awkwardness, that leaves 595 seconds of the 10 minutes for moral qualities. In short, if you're honest and genuinue, you have ~99% of the time (minus time taken for the interviewer speaking) to get that across.