Learn how to sell! Stop worrying what people think of you. If you are an introvert, you will have to force yourself to be a lot more outgoing. You must talk about yourself, the things that make you great, what separates you from the crowd, justify why people should buy from you, and share your business with the community.
Many entrepreneurs find themselves speaking in public for the first time. You need to get out of your comfort zone. Learn to engage publicly with your customers. Take a class to help you learn sales techniques. Join a networking group to aid with your elevator pitch.
Attend Toastmasters to give you that edge when speaking to large groups. Go live with your knowledge and show the world. Sell yourself!