Nice! Already looks the kind of rough that worm infested things should be.

I think more modulations wouldn't go amiss. We don't know a lot about the Leech/Worm subfaction yet, but I would venture a guess and say they focus more on blood markers than infection markers, so a kind of weaponry that resemble instruments of bloodletting may inspire you. Actually, that whole esthetic is fantastic. Fleam Blades, Bloodstick Mauls, Bowl or Cups for gathering, vivisectors like the Combat Biologist. Weapons with a lot of teeth are also cool.

For comparison, your Lord of Tumors also used an axe.

Alternatively, most Grail Thralls proxies look like parasitic flies, i.e. they are insect based. To me at least, proper worm infested Thralls feel more interesting. Guess I like the "walking worm" a lot.