I have seen your art. You draw beautifully.
I was just saying because I am an art instructor. I teach 6 days a week. So feel free.
As for YouTube channel, it is like a website.
The are two things to consider.
How much traffic you get. You want a lot of traffic. For that you need good content.
And, your niche.
For example, art niche do not get much revenue from ads as finance niche.
Hope this helps.