i spose look at every sentence and description and consider "is this relevant?", "is this worth it?"
i spose comics could arguably be purple as well (not literally) - not every panel in a comic is rendered with the same painstaking detail and beauty, is it? you dont draw the main character the same way as the extras, do you?
every bit of description should be adding up to the tone, theme, and structure of a story. that vase is beautiful? why? is it bc the character is feeling awe or love, is it to motivate them to steal it? to move the reader when it gets smashed?
lets take that articles example n pick it apart
The young, precocious child of elementary school age was commanded by his endearing and loving mother to put on a change of clothes. He lumbered up the crooked and creaking stairs to his massive wardrobe that could rival Narnia’s. It was very old and worn, made of a dark and foreboding walnut, reliefs of ancient Roman and Greek gods festooned its rough visage. He opened it gingerly and it creaked and groaned in ominous protest.
so in a comic, this would be the equivalent of every image being drawn at top contrast and saturation, so that everything feels flat. theres no black, no white, all areas are bright red and yellow and green and were not sure what were sposed to be looking at.
theres a lot of repetition of points. keeping these words and these words only, but getting our baby killer on, we can chop it down to this:
The precocious child was commanded by his loving mother to put on a change of clothes. He lumbered up the crooked stairs to his wardrobe that could rival Narnia’s. It was worn, made of a dark walnut, reliefs of ancient Greek gods festooned its rough visage. He opened it gingerly and it creaked in ominous protest.
still too much, but weve cut out all repetition. now lets replace all the fancy verbs with basic verbs to see what difference they make. im gonna chop out the adverbs and some passive voice while im here
The precocious child's loving mother told him to put on a change of clothes. He climbed up the crooked stairs to his wardrobe that could rival Narnia’s. It was worn, made of a dark walnut, reliefs of ancient Greek gods covered its rough visage. He opened it and it creaked in ominous protest.
now heres where i wish i could write in red
The precocious (how is he behaving precociously here? what is this trait setting up?) child's loving (ditto) mother told him to put on a change of clothes. He climbed up the crooked (what is their crookedness conveying? is this symbolic of the childs uneven emotional journey? to create a sinister atmosphere?) stairs to his wardrobe that could rival Narnia’s (dont.). It was worn, made of a dark walnut, reliefs of ancient Greek gods covered its rough visage (do not reference unless thematically relevant. are these a motif? foreshadowing?). He opened it and it creaked in ominous protest. (ominous protest suggests the stairs are for a sinister atmosphere, but describing the mother as loving alongside the sentence length and structure negates that feeling)
its not really possible to rewrite this passage to be functional bc its devoid of story, and the twilight example i think is pretty justified for the genre and tone, even if its bad writing.
tl;dr try writing a version in beige prose to compare, and only include what is actually useful for tone, story, and theme