I'm not sure how to say this right, but it feels like the tiles are too "complex" now?
They're certainly good tiles, don't get me wrong on that, but the original tileset, as simple as it was, kept the eye focused on the player character through that simplicity, and it feels like the more complex tileset might have lost that a bit.

Might be helpful to see it in motion though, before any big changes are made.

So, I'm joining a DnD campaign with a neato setting and decided to do a mockup of the game world.

As it's been explained to me, someone decided it'd be a great idea to shift a planet from one dimension to another without thought for what might already be there, resulting in both shattering against each other and the two cores merging, eventually forming a stable cloud of debris upon which life is, against most odds, still possible.

So, I drew this:

Problem is, I feel like it's missing something and can't figure out what. Was trying to go for the classic "space shading", which tends to be pretty binary, but I feel like in doing so I've made the debris field a bit sparse for what's supposed to be two planets-worth of matter despite not being able to fit much more in with any success.

Any ideas on how to fix this?

Here, a solid ref on the helmet. There's no striping like you've got here, and it's got more of a chunky blocky look to it than a rounded one like you've drawn.
Good stuff though!

Claiming t22 [Done!]

during the midswing it might help to have him lean forward and have his arms stretch out further. Not going to get much impact swinging from the elbows, ay?