First Impressions

I have recently realized that I am not very good at making good first impressions. I think my second impressions are good, but not my first ones. And I've decided that those first impressions are incredibly important for someone in sales and for any pastor. So, I am trying to do all I can to figure out how to make my first impressions better.

Any thoughts? Please share any advice you have one how you personally try to make a good first impression, or if there's any tips of anyone you know. Also, if you know me, anything you can think of for me that I do wrong or something else I should try?