I've been thinking some more about this, and maybe if a few others are interested creating a community for practicing together would work. I mean, I have a bunch of drawing books with exercise suggestions, and also just things I want to practice, but I rarely stick with doing these alone, and I bet other artists also have a pile of both, so what if we collected these for the community and then once a week there'd be a mod post with say five drawing exercise suggestions for different "craft aspects" and artists could pick and choose one or more to do over the week, and over time this way there would also accumulate a backlog of drawing exercises by topic as a resource. The themes could be things like anatomy, portraits, making humans look diverse (you know, not just drawing anatomy mannequin bodies when you draw from imagination rather than life), perspective, drawing emotions, different media, animals, landscapes, light and shadow, whatever, but a mix each week and not too constraining, maybe sometimes with links to online tutorials and stuff on specific topics, or page scans from the drawing books an exercise came from. And the community would be open to both fandom and original stuff, and to any level of elaborteness and skill or style, that is you could do just a quick doodle, or "real" drawings, whatever you feel like and fits the execise. It would be a bit of work initially to collect practice suggestions and put them online, but otoh it could work as incentive and be fun for people who'd like to practice but don't have the opportunity (or means or inclination) to be in actual RL drawing classes or take courses or meet with other hobby artists in RL or whatever to practice.