CELS, these are looking wonderful! I love your character designs. I can't believe how many you keep coming up with.
Regarding the commoner, I'm a less experienced guy, but I've also given it a go.
Googling Bavarian dress (the first thing I could think of with skirts that have the right sort of folds, such as
these) suggested that less contrast might be desirable in the areas that are well lit, but I compensated by adding in
more contrast at the top. Removing the darker parts of the skirt also got rid of half the banding, and expanding the mid-brown and AAing a bit with it got rid of some more. As ever, your mileage may vary.
I also mucked about with some other parts. I thought the shadow inside the red cape on the right didn't suggest anything that we could see the bottom of the cape doing, so I smoothed it out. I also fiddled with the gold and red band on her forehead to make the eyes more prominent. Her left shoulder (our right) looked too close to her neck to me, so I tried to move it further out. I think I messed up the hands a bit, though. Her left hand is in quite an awkward position and I don't have a hand model available at the moment (or a nearby mirror). Is she in the middle of lifting and throwing back her cape?
Oh, I also moved her feet apart. I assume from the original that she's meant to be walking towards us and a bit to our left, but it started to look less balanced to me as I was working on it so I shifted it to a standing pose. That was more for my benefit really but I think, if she is meant to be walking, it'd be good to use the folds of the dress to maybe show the knee/leg structure and add some movement that way. That's a very mild suggestion, though, as I'm not sure how I'd approach it and I don't think skirts like that really show much of what's going on beneath anyway.