We know that starting an e-commerce business is exciting and it can be tempting to jump right in, without constructing a business plan please don’t start it.
If you haven’t put your ideas, questions and concerns on paper, then you haven’t given your business model enough thought.
Taking the time to write a business plan might seem like a lot of work but it can save you a lot of time and money in the long-run by better preparing you for potential challenges and opportunities that you’ll face as a first time entrepreneur.
Source: How To Write An Ecommerce Business Plan For Your Startup