you can post in the group since you are following the group - on the group page, click on the right side "NEW POST", create your post - by default, it posts to the group. After that, click re-steem, and it will then also show up on your blog page.
Good Artist Group to belong to and post in is OnChainArt
About the models: yeah, we had some interesting poses too, but mostly for gestural drawing, short poses. It takes some athletics to hold a pose like that for a long time. But from your short gestural drawing, it is then easy to make a detailed drawing after. Tip: to understand the pose, also pose yourself like that for a moment before drawing it, to feel the tension.
And who gets the payouts for posting to the group?
Yes, I've used that trick before, holding the pose to understand it.
payout - we'll see, I think the Community gets a small portion of it, just like curators do, but idk - have to see how its split up when my first post in a community gets paid out.
For me who is looking to support artists, it is perhaps a bit easier in art related communities, because they are moderated and posts that do not qualify as art are muted in the Community, whereas anybody can use the #art tag and looking under the tag you have to scroll through a lot of crap to even find anything remotely qualifying as art. Of course a community can only be as good as the admin and moderators are vigilant and take it serious.
Yes, it's all down to how long the moderators remain active, that determines the quality.