The initiative you are showing is great. I'm not an interior designer but I do have a business minor. I'd really recommend you take business courses at college and investigate either a business minor or possibly double major in interior design and business. The accounting skills you will learn about how to keep a set of books and the marketing skills will be so helpful as you attempt to get a bank loan or attract new customers.
Ron recommends the following next steps:
- Take a college accounting course.
- Take a college marketing course.
- Reach out to an interior designer and ask to interview them.
- Attempt to gain an internship or paid position at an existing interior design firm.