The range of income for the first year will depend on the type of clients you decide to target. One rule of thumb is that you should charge twice as much for the flower arrangements, than you pay for the flowers themselves. If the cost of the flowers were $25, you should charge $50.
To make a $25 profit you would need to sell 1,000 arrangements a year, or 20 arrangements a week in order to make $25,000 a year. One way to increase your income rapidly is to hire someone to make the arrangements and concentrate on sales.
The flower business has typically been thought to be the corner flower store. It is typically a retail establishment. However, that involves long hours, hiring employees and a high overhead. In this case you would work out of your garage or a storage unit. You would focus on business clients who would provide you repeat business because they have multiple clients. They would call, email or fax in their orders. You will create unique flower arrangements for their clients and then arrange their delivery.