There's no way around it, people will always initially judge you by their first impression of you. So, make that first impression as polished and professional as possible. This will give you the opportunity to hold them long enough to hear what you have to say. Once you do speak, avoid youthful slang and make strong eye contact. Beyond that, don't overcompensate, just remain professional and demonstrate a positive, upbeat attitude.
There's no exact science for keeping your founding team members around for the long term but there are a few things you can do to increase your chances of being surrounded by those same early employees further down the line.
While exuding passion is at the core of success in both life and business, savvy entrepreneurs know that turning passion into a thriving and profitable company requires more than just a strong emotional connection to the brand.