Making a good impression on a first date involves being yourself, showing respect, and displaying good manners. Dress appropriately for the occasion and ensure you arrive on time. Be polite and attentive, listening actively to what your date has to say. Avoid dominating the conversation or talking excessively about yourself. Show genuine interest in getting to know your date and be mindful of their comfort levels. Lastly, don't forget to be positive, smile, and have a good time!