Almost nothing can be imprinted on the memory as much as a first impression. Let us face it, we usually remember the first time we met certain people because of the impression they left on us.
First impressions provide a rough idea of who you are and in the event that you give a wrong first impression, you may lose a really good chance.
Looking to always leave a good first impression? Here are the tips:

1. Have the right mindset
It all begins from your mind. You have to believe that everyone deserves to be treated right, not just when you want something from them. Remember that someone else may be watching how you treat others and that can form their own first impression of you. Thus, be polite to EVERYONE. Always look presentable. Always be on your best behavior.

2. Smile
Nothing relaxes your face and makes you look more approachable than a smile. Even if you are ordering at a restaurant or asking a stranger for directions, smile.

3. Be polite
Being polite doesn’t mean you are flirting and it surely does not mean you are dumb. Isn’t it better to be polite to someone you will never see again than realize you were rude to someone who would become your boss?

4. Be confident
Confidence shines through all the time, same way fear can be smelt. It is attractive when it is obvious that you can handle yourself comfortably anywhere. Whatever you are doing or wherever you find yourself, be bold, even if you are lost.

5. Make the other person feel comfortable
Supposing you are at an event and you have just met someone new, remember that the person is just as nervous as you so compliment them and make them realize you are really interested in them by asking polite questions. It will be put him/her at ease and get him/her to like you better.

https://www.nigerialog.com/random-thoughts/first-impressions-101/new/#new

First impression really last long.

Very true