Much better! Nice wings.

The curve of the back is still a little jaggy at the very top.
The head could possibly use some tweaking too, to keep closer to the ref baby-ish face. The horns will probably need to take some liberty from the ref though; they also might have a different color.
It might be interesting to get away from the ref and try a bigger head anyway, to make better use of what little pixel space you have. It should go well with the cartoon style you're going for.

The brown underside is too thick in the front (neck), as its horizontal outline in continuation of the belly makes an unwanted eye-catching element.

Generally, beware of inside outlines. They take up a lot of space that could (should) be used for shading, and don't help with readability for the smaller elements (eye, claws, wing tip).

Colors: here's a breakdown of your palette.
At least one of the mid-greens should go, possibly two (one is used in only 2 pixels!), and you could do with two browns.

The shadow purple is very dark (almost black on my monitor) and too saturated; also it doesn't make sense as you don't have purple anywhere else, and it's not consistent with the dark green shadows on the dragon itself.
On the contrary in dpixel's edit, the dark blue outlines, dark brown shifted towards colder tones and bluish light greys elsewhere give sense to his light purple shadow.

Avoid pure white, esp in the claws which come out as very noisy.

Try some hue-shifting (as explained in cure's tuto I linked before, also here). Notice how the hues (H column in the HSV breakdown) are very close for all the greens, and for all the browns? You might shift the brighter greens towards warmer colors, and the darker towards colder, and so solve the shadow color issue. You also need near neutrals, to bridge between the greens and browns, for instance. As it is, most of your saturations are above 70.

I think you should concentrate on one piece at a time and take it as far as you can, asking specific questions and trying to improve it.

I'm afraid the variable shadows, although true, make it confused and hard to read. Given the unrealistic visual conventions that this type of perspective is based on, it's probably better to give all the beds the same shading.

I'm still bothered by the floor. It clashes with the beds on a composition pov, it doesn't read like army barracks floor (more like a spacecraft-like floor), it's unnecessarily distracting (unless useful in the gameplay). How about a 'simple' ordinary planks or tiles floor?

Mathias, you cheater you 

Ok, I have a few problems with this (potentially great) piece.

Perspective: to me it looked seen from a low angle, as the characters frontal view and lamp post (both versions) imply. Consequently I didn't see water at all in the bg, only fog. The pavement was partly inconsistent with that, but I saw the scene as taking place on some sort of hillock and all that would be needed in this case was some rounding of the pavement.
At such an angle we wouldn't (or barely) see anything behind the hillock.
The higher angle of view implied by the water is seriously inconsistent with the characters frontal view and lamp post; and more importantly, it's not as 'spooky' as the lower view.
Also it then looks that the dolls are standing just at the edge of the water, yet they're not dripping wet as if they had just emerged, we don't see a pavement-water transition, the presence of bushes and lamp at the edge of water is weird, etc.

Focus: I think the water, esp animated, takes too much attention from the characters anyway. You just want to give a few visual clues of where the scene is located. Also an elaborate scene animation which leaves the main potentially animated element(s) still (characters) looks unfinished to me.

Light: it's good, but could be more striking. Remember the inverse square law: the bushes on the left being 2 to 3 times more distant from the lamp than the large doll's head, they should look 4-9 times darker (whatever that means!). These bushes (also pavement and dress to a lesser extent) should be just hinted at with a few dark patches.
That might also help with the luminous eyes visibility.
If you keep going with the animation, you should have some low diffuse light in the dark phases, at least on the characters, to reduce the jarring blinking contrast.

Bushes: I'd go for some easier and more defined elements such as a few grass blades or other plants that could convey some atmosphere (twisted, lifeless, etc), rocks, derelict wall or fence, etc.