Hey! Cool character. Did a lot of tweaks, I will walk through them.
When you work with a character wearing anything that can obscure the joints, its always a good idea to draw out the figure to see if you didnt make a mistake. In your case, the figure was elongated by a significant amount in the torso because not only did you not have an evident crotch because of the harem pants, you also had the upper chest/neck covered, and
even the belly. All these costume pieces make this a super important step.
I corrected the pose and posture to appear more solidly grounded by spreading the weight farther out between the feet, thickening the chest, and setting the shoulders further apart to give more room between them and the body. Notice how with the narrow shoulders you had to bend the arm like a noodle in order to have it not hug the torso. Now they are allowed to be at ease, resting on the pants.
For the pants I was a bit confused about the blue at the bottom, I just made them into a fabric that is like a cuff. I took inspiration from pleated clothing that allows it to expand past its resting point to show how the pants would billow out as they get towards the knees. (held in place both by the waistband/girdle, and extra material below pinned to the leg with the cuffs. gravity will just make it sag in a nice dallop shape.)
To avoid the head and cloak merging into one lump, i gave some room between the face and the cloth, and angled the cloak opening towards the character facing to help solidify a directional purpose. I feel it is important in platformers for there to be an evident intent from the character, an ambivalent standing idle does not look or feel as responsive.
You had some really good base colors, but they were all a bit too close together. Maybe that look is good for a game set at night time, but i just gave a standard well lit condition for these colors, its easy to alter it from this point. You can solve most of your issues with simple gamma and contrast adjustments, and then reigning the saturation back in.. Skin and hairtones can be separated by shifting the hue for the hair more yellow and the skin more red, and likewise the greens of the shirt are a little tricky because they border the cyan girdle. So naturally the dark green was pushed away from cyan until it became a borderline yellow green, and now has a nice contrast with the cyan.
Changing the cape is purely a silhouette thing, to give him a more imposing presence. The boots could stand a little detailing as the rest of the outfit was so fluid that detailing would not be worth the effort, and I think it helps shift visual weight downwards on the figure.
ah, falling asleep, hope this helped you
