Starting my own business

I am on a zero hours contract. But I have been off sick for the past few weeks and now that's come to an end. But I don't believe they have any work for me at this moment in time. I want to work part-time but everything they have is full-time. I have asked. I cannot work full-time due to sza. In the meantime I have been thinking... I love crafts why not try my own business.

Getting a laser machine to craft with is expensive and I will need to find another job that I can do (part-time), and then save up for this to work in a few months. Or are there grants available to help? I do get UC. How do I declare my Etsy shop (once I start it up properly)?