I don't think it's just one thing. I would: -Define a business plan. A plan is better than no plan -Plan a marketing strategy. You have to make sure there's

I don't think it's just one thing. I would: -Define a business plan. A plan is better than no plan -Plan a marketing strategy. You have to make sure there's demand for your product. -Make sure it's available on Amazon so there's an easy way to order it. - Repeat until there's a steady demand - Continue by executing your business plan FYI, going retail is expensive and very resource-intensive. You should wait until after you've gone as far as you can go online.