I jump on art channels here and there, one that’s always good is “DrawingWiffWaffles” who has a ton of marker and other types of work, “Peter Draws” is an interesting one for his own pen illustrations, and “Drawfee” if you’re into a comedic trio challenging each other to random drawing contests.
I’ve not seen this channel before, but wow, that’s some serious talent! I’ve always been fascinated by watercolor, and still do I tell my wife that if I were to get a tattoo, it would be watercolor inspired. (Google image search watercolor tattoos, there are some really cool ones out there)