You should be able to combine your chief interests with the other skills that you might possess.

If you are let’s say, planning to sell cakes, what is that other thing you are good at along with being a great baker? If you are also good at digital marketing, you can blog about baking practices.

Figure out your target market, their income, demographics, needs, and preferences. 

This research will help you determine what value you can bring them i.e. your unique selling proposition.

Begin by inviting your friends and family and urge them to bring their acquaintances on board.

This can manifest into a social media – a Facebook page or group that you may ask them to be a part of, a Youtube channel that they can subscribe to.

Utilize your platform to attract customers by offering your services at a discount.

This is where the previous work that you did for free comes into play since you can present it as a sample or part of your portfolio.

When reaching out to the customers through a sales pitch, ensure that it comes off less like a sales thing and more of a friendly encounter.

Keep refining your pitch and making it better to turn your passion into profit.

Incompetence pertaining to financial management and its related areas often leads to business failure.  

Perhaps you should buy accounting software and learn how to use it. You may want to hire an expert if you feel that a software system might not cut it.