hello!

Woah, first thanx for all the detailed advices!!

And you've done a great change on it!
I'll try to improve better on my next one (or maybe I'll re do it) and I'm happy you took some time to show me the difference!
I actually don't know a thing about pixel art, and don't have a clue where to start or how to make any sort of effects
About the anti-aliasing, the reason why I didn't use it is that I read somewehere that I shouldn't use it at all :-S

Merci encore et je m'y mets!

A bientot
 

Good start, can improve!

Edit here.

The eyes look strange and hard, for two reasons: they're too large (considering the character doesn't have a manga or cartoon style); they're too black in this low contrast piece. It also seems you have accidental transparency in them.

All colors (except black and white) have the same hue, this makes it look very monochromatic even despite the apparent difference between browns and oranges. I tried to vary hue, increase contrast and saturation. This is just a quick try of one possible way to go. I think you'll want to keep the brownish tones on the cloth, you can still do that and shift hue to make it look more lively.

I didn't change the dog/feather colors, but it might help too. Bring some light grey-blue in there!

Then, dithering. Far too much and indiscriminate, and in fact almost useless in this piece. Dithering is not the magic fix we've all hoped it was! It can be pretty awesome, but it's difficult: you've got to understand it brings texture (ok on cloth but hard to control); the checkerboard pattern usually achieves the opposite of the desired effect (harsh flatness instead of soft roundness); isolated pixels have this way of jumping to your eyes. Also not all colors couples accept it well.

Then you might consider some anti-aliasing (didn't do in the edit). Most pixel art needs it more than dithering.

Au boulot! ;D

Looks really good, but something seems off about the girl's face...