The last and most important way to express your appreciation and interest after an interview is to be positive and proactive. Don't let the stress, anxiety, or uncertainty of the job search affect your attitude, motivation, or confidence. Instead, focus on the positive aspects of the interview, the feedback, and the opportunity, and use them to improve your skills, knowledge, and performance. Also, don't stop applying for other jobs, networking with other professionals, or learning new things, as this can help you expand your options, increase your visibility, and enhance your value. By being positive and proactive, you can show the employer that you are a resilient, adaptable, and enthusiastic candidate, who is ready to take on any challenge and succeed in any role.