There are many ways to sell more products than before. Here are few that I could think of -
1: Plan - Be sure that have done your paperwork and know all the information about the product you are going to sell. You need to know what kind of audience you are going to target and to findout what is the best way to approach them.
2: Market, From step one, once you have the information about who you are going to target, you need to find a way to approach them. In our everyday life, the most common ways are flyers, local newspapers and word of mouth.
3: Great service - Be sure to provide the best service possible. People love to return to someone who treated them more than just a customer. Not only that, they are rocommend you to others they know as well.
These are few points that I have learned in my journey to run my own business and thankfully, my small business did a gross of $2.5Mil this year so far.