Positive Feedback
You start off with a bang! "This mask is tired." It can either mean, like, this mask is tired as in without energy, but also tired as in something I am tired of, worn out...
I like your shorter lines/phrases in the first stanza, I think it helps sort of ease the reader into the rest of your poem
"Watch as those parasites travel every inch
of vein and vessel to burrow beneath bone." 1. Nice alliteration! 2. That's such a vivid mental image! 3. I love your word choice here, it creates this sort of eerie tone, from the words parasite to vessel, and then burrowing beneath bone...
I like how stanza 2 begins with watch and stanza 3 begins with listen, helps create that cohesion of the narrator asking the reader for something
I overall really love the third stanza, "to scrape what's stopping you bleed" is like, very metal and hardcore and I'm sad I didn't come up with that
"tokens of flesh" is so very interesting. So far the poem has created this almost body horror aesthetic through your deliberate word choice and the phrases you use.
"with a slice of a life you'd never expect." THIS. This line like... It fascinates me. Usually I think of "slice of life" as like, a genre of fiction just showing day to day activities, but I feel like it can also apply as something far more gory here
"by the scratching sound
of stricken silence." Is not only a wonderful note to end on for that tone, but it's also a title drop as the last line, which I just. Love.
the image you attached is so cute
Overall
You create a ton of cohesion and consistency between lines, and I really like your choice to keep it free verse instead of forcing your concept into a rhyme scheme. I love so many of these lines and the overall vibe of your poem is dark, but not explicit.