Hello there
I'm new here as you to but I learned something about pixel art (not that much but I guess it could be useful for you) About the legs I don't know exactly what form you wanted to make (tip try to sketch it on paper or try with some layers on your Editor I'll show you some examples)
1. Sketch
2.Giving some colors, details and change of attitude
3.Some Extra things liek (guns,rings,magic stuffs or technology)
4. Finding Some things I didn't liked and trying to change it ! (in this sprite I've tried to change a Helmet + this rings)
5. Highlight,Shadows ring change and details
About the pixel art here is the site where you can learn something about how to avoid some mistakes (I'm not that perfect to but you know ;3)
https://opengameart.org/content/les-forges-pixel-art-course + video
https://www.youtube.com/watch?v=hEGeveEsg0Q and
https://www.youtube.com/watch?v=FbCw-_iRdc8 and the wideo how to make an animation of walking
https://www.youtube.com/watch?v=nQZECTSzaaII hope this will help you alot with pixel art and your "perfect" style technique so yea have fun
That's the main thing on pixel art !