stacco pace, well adapted, makes one think of Lovecraft....if all of the lines were 7 or 8 syllables I think this fine poem would even be improved over all--(as a general rule, though not always, most poems will improved if you have the same number of syllables in each line) I liked it muchly...bravo
I think you meant: Stabbed with clotted ink(-)filled pens --and-- With lifelessness-- im(m)une to death
I noticed that most of your lines were between seven and eight syllables, except for two lines: Embodiment of bittersweetness --and-- A blank spot on the coarsest canvas I think you could work on these to be a bit more concise, and to fit into your seven-eight syllable count. As they are, they stick out as being slightly too long on the tongue to read out in regards to the rhythm of your piece.
Your very last line I would change too. I think it's just me but "nevermore" is one of those poetic words that makes me cringe every time I hear/read it. Also, you're rhyming "more" with "evermore"-- true end-rhyming with the same word isn't usually done, y'know? It's... awkward. I think you could come up with an ending that still rhymes and does away with that cliché. But that's just what I think.