You've definitely improved! I really like those two drawings/paintings
I'm not much of an image guy so I don't really know what to comment on. I think you know what you need to work on better than me anyway
The little girl that's sitting down, I could point out one thing though. The face/head seems a little bit too far away from each other and from the neck. I don't know if it's just me, but it looks like she's a bit of an alien in the shape, or wearing a mask... if you get me? I think it might be because the cheek line you drew there stops suddenly in the middle (probably because of the hair). If you'd look at the right side of her face...