Wario and Waluigi RPG sprites

[Mr. Jam]

First is color! Those colors look dirty, which is bad considering how bright and colorful the M&LIII style is. You should try out things like
Finding a more saturated or "truer" yellow, and have the darker values hue more into red instead of straight to black.
Only sparingly use shades. Go over it again and if you have to ask yourself if more shading should go somewhere the answer is no.
Of course you can always use colors from the original palette. I would even suggest using Bower's yellow, and the Shroobs' purple.

I'll try to make my own palette for the sprites with hues instead of shades, but I tried working with the game palettes before and I found the results didn't look so good(hard to find a match for wario and waluigi, even the shroob's purple didn't look good on them).

Next is the overall design. From my experience M&L is just big enough to put a lot of character into the face. With Wario, he has a pretty big and wide face. So you should start of with a bit of a resize because right now he looks a little squished. As you can eye-ball it here Wario is a little over two Marios in legnth!

I have been tryingto keep wario under 32 pixels in width, so there isn't a whole lot I can do for that. I'll see what I can do and I guess I could try it both ways to see which I would (32 pixels compared to two marios(44 pixels)).

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Also he doesn't wear long sleeves.

In many of the mario side games today, his sleeves still remain...