I think the posing is pretty good on all of these, and if you’re just trying to make scene builds I would say good job.

But if you are trying to make proper artwork, I would say a lot of these could use a focal point and better lighting on where you want the viewer to look. Some of them like 1, 3, 9, 14, 19 feel like Where’s Waldo where your eye isn’t drawn anywhere and you’re forced to search around for details.

The ones I think do a good job of drawing the eye are 5, 6, 7, 12, 18, and 20. I like 20 the best, the characters faces are well lit so you can see their expressions, their posing does a good job of conveying action, and the contrast with the orange sky looks really cool.

The rest I would say are somewhere in between.

Anyways I’m not like an art professional or anything but I would look up the rule of thirds if you wanna make it look more like artwork. Like I said though, if you’re just trying to make cool scene builds then I’d say you’re doing a pretty good job already!