since I'm on my bullshit:

If you want a hot tip for how to instantly improve any animation you make - open the spline editor and give your key frames some smooth transitions instead of linear ones

shit has mass and can't turn on a dime, and that's most likely what makes your animation look odd

for a bonus, make sure nothing is symmetric - twist a foot a few degrees, make it contact a frame later, slightly tweak the splines, etc.

Also, when I doubt, consult reference footage, animation has a ton of details you just miss out on if you do it from memory