So this is where we have a conversation. Enough about us, let's talk about what makes a successful online t-shirt business. What's crucial is to provide customers with the information they need to make informed decisions. Followed by helping the customers in every step of the way from “enquiry” to “product delivery”. Providing assistance to customers is almost one of the most important keys of a successful business. As far as t-shirts are concerned, there should be no compromise on the quality of the material. People often use cheap synthetics in order to reduce cost but it's a big no-go. Doing business online has it's own benefits, but to cherish those benefits, you have to deliver your products on time. Making fake promises will lead to almost no customer retention and can be a big problem for the business. Lastly, never over charge your customers. Ask what you think is a fair price. Stay true to your customers, and they'll stay true to you.