@Tsareena For instance, the Mario pony. He looks pretty dark on my monitor, not sure if that's intentional. But anyhow, it's significantly harder to tell where the shoes begin and where the pant legs end. I suppose the sprite is easier to read when using a dark background. What color background were you working with? I looked at your Mario pony sprite against a dark backdrop and it's still difficult to pick out where the legs are.
For this one too, I actually like the more saturated hair, it pops out better since it contrasts with the pants; the hair is supposed to be a notable feature of this character right? The saturated brown does draw attention to it better, but when you darken, desaturate, lower the temperature, it recedes (doesn't help that the green has the same color changes) and it blends with the other washed out colors.
Might help to see the sprites desaturated against a neutral colored backdrop
Or blur it out
And also helps to look at a histogram. As you can see you can definitely should aim for a broader tonal range; you don't have very dark or very light pixels here. Also, it skews a little to the left, meaning there's more darker pixels than lighter pixels. Now, there's no "right" or "wrong" histogram, but learning how to examine one probably helps when picking out colors for characters.
oh yeah glow ups ! now i wanna compile all my honses too but . later when i have the time bc i have a lot of horses
really like your sonic ones especially