>>31148636First off, start by learning the basics of video editing and making YouTube videos or shorts to grow an initial audience, could be TikTok as well if you're into that.
Streaming is fun, yes, but streaming to 1 viewer (the StreamElements bot) is miserable, so you want to get a little traction on the videos, and then advertise your stream to those people, so you can get at least some 4 people that can watch you and leave some comments that you can bounce off of, it makes all the difference in the world to have that.
Once you've been doing it for a year, you can have a very good idea of where your strengths and weaknesses lie, and you'll have a decently sized portfolio to show to an agency when you apply for the auditions
It's also around the 6 month mark that the novelty wears off, so you can truly tell if you want to give it up, or keep going
At the start you don't need to blow a load of cash on a model, do your first stuff with something like Picrew (picrel), which has some decent choices for female characters, and then comission an artist for a custom PNG. When you can be more assured that you want to keep doing this, then you can look into Live2D stuff. Investing the money into a good microphone is more important than the model