If you're nervous about jumping into your own business try writing a business plan for your crafting business. You can research online what is included. It will open your eyes to what kind of set up cost you're looking at, time you will spend working on it, expected return, etc.
Business plans are what people submit to banks, lenders, investers to get money for their business idea. If you need money to start and you already have a business plan, the bank should consider your request for cash.
If nothing else, do some serious budget planning to see if the time/effort/return on investment is worth it-- and above all believe in yourself!