Microblading business

Hi everyone, im considering doing a course on microblading and then starting NY own business after this. Wanted to get peoples advice on:

1) has anyone done this and if so, how is it going for you?
2) is there a strong demand for the treatment?
3) how many bookings do you get on average per week and has this been growing since you started?
4) would you consider this a full time business or just something to make a bit of extra money on the side?