Could also try to replicate some niche styles like Sonic Battle or Strikers.
But still, you might just need to try different looks, poses, and concepts. I think I've only seen you do puffbuff once or not enough action-y stuff beyond just pear slams, variety can be refreshing/prevent staleness!

Hard to say. You're coloring is generally good and I say shading is good, maybe a little too dark for certain ones when it comes to looking from a distance.
I think maybe you might need experiment a little more, different shapes and scenarios? Just to spice things up and challenge yourself more.

Bet

If these still be available, I'm down to try this funny thing!

You're pretty chill and quite approachable for advice and discussions on plenty of topics!