a lot of people stream themselves practicing. that is hours of content, and you can talk to people while you do it.
it is definitely possible to make a living on twitch. a friend of mine just travelled to several places just with twitch income alone in addition to their daily expenses.
you have to build a following by consistently streaming at certain days and time so the viewers know when to tune in. it can be just one day a week at first, but if you always start on time on that day, they will come and watch over time.
