the face seems to have no clarity, maybe because your trying to fit too much detal there? I'd simplify it so its much more readable.

I'd add a bit more warmth to the rocks in this mockup, a bit too yellowish imo, also I think the grass is really blinding. Here's how Id have it, if it helps.



..edit

oh sorry how rude, loving this so far such a cute sprite. goodluck.

Really you just need more contrast with this, here's an edit I made earlier.   



You can share some colours in this if ya wanted, no need for so many with this, I think the addition of black as said would make a great difference.

I put his feet to a flat and pushed the leg on the right over a pixel for balance. Was just trying to make him more grounded, being a small guy and all.

Alter the lineart too a tad, imo his heads a bit too big. Gave him ears and a better sense that he can see, rather than two lines for eyes.

Changed the hair too, looks very meshed onto the head in your version. Bit more on the front

11 colours for this, im sure you could get it down more, not like it makes a difference.. hell you could bring it to 10 to add some highlights.

I aimed to have the skin a warm but light cartoony pink, with the shade more of a darker orange that could be recycled into the scarf highlighs. The brown in this can be used in the skin, hair, shoes and im sure the coat too if pushed. It acts as a connection to black alongside the blue, both being on that side of the hue mixer.

With the blue coat Im keeping in mind that for the white of the eyes a blue can really help soften and give some interest.

Just my thoughts, take what you like from what im advising and keep us notified of updates 

much love 

Im gonna give ya a bit of help with the last guy, hopefully it should help you with them all in some way or other. This just caught my eye to be fair.



Firstly I worked on the palette a tad, pushed the darkest shade to black and the lightest to white for contrast sake tried to have some variation in hue/saturation so it's not so burning on the eyes. I've lowered the saturation of one of the darker shades to add a bit of softness to the skin, plus skin has a reflective quality so that it looks more natural to have some blue's in there.

The trapezius seems far too high on the neck, sort of like a skewed perspective. You need to look at the anatomy of the upper torso as well as the human head construction, it's all connected so it's helpful to imagine what's going on outside the reach of your canvas to determain how to place your shaping and details.

The head seemed a bit too wide, shortened it horizontally a pixel and also lowered the eyes, nose and mouth down a pixel too so it's level to the ears (which I widened). Tried to make the proportions realistic but keep a cartoony quality to this.

The nose I admit is hard to shape in such a small area, the only way to really get around this is to hint whats there and make what you can show easily readable so the eye can make up the rest.

You should use your palette shades to chisel your character into shape more, i've kept in mind where I want the cheek bones to be to help me shape that area, with the light coming from the top left there'd be a degree of shade change from just under the eye to running down to the chin that can really put some shape and interest.

I've used the black to darken and thicken the eyebrows in comparisant to yours, lowered it to the top level of the eye for the frown and increased the shadowing it projects.

Try use the white to highlight more than anything, the odd shine here and there really can help to show that there's light present in the image.



I could go on for ages but lastly i've added what adding hair to the bald guy would look and how to approach his hairline, you really need to know the full construction of the head before going in with adding hair, the image just above needs more work done there because the hair seems to clung to the head. Also added in more detail to the frown between the eyes.

Hope this helps.