I pulled the curtain open moremore open and looked down uponat the corpse before me.

The dead woman's body, or what is remained of it, was full of scars and wounds, in the shape of magical runes.

Her face was all smeared out with blood, so it was literally unrecognisable.

But as soon as I looked at her hand, I noticed her unusual marriagewedding ring and I recognised her: it was my mother.

I turn toed and ruan away from all this nightmare into the hotel's hallway, but then I saw the rotting, dead corpse of that lady from room 217 standing in front of me who's rotting away and, laughing in a demonic waally.

The room suddenly felt cold, and a sudden smoothoft breeze caressed the skin of my back, as an omen of death.

"Smooth" isn't really a word used to describe the wind or the breeze

The Edited Part Of My Homework

I would suggest not capitalising every word

I pulled open the curtain open more and looked down uponat the corpse before me.

The dead woman's body, or what is remained of it, was full ofcovered with scars and wounds, in the shape of magical runes.

But as soon as I looked at her hand I noticed her unusual marriagewedding ring and I recognised her: it was my mother.

I screamed, but the sound couldn'tdidn’t escape my lips.

The demons of the Overlook Hotel took over my mind so I couldn't control myself anymore.

I turn to run away from all this nightmare into hotel's hallway, but then I saw the dead corpse of that lady from room 217 standing in front of me who's rotting away. She was decomposed and laughing in a demonic way.

The room suddenly felt cold, and a sudden smoothcool, fresh breeze caressed the skin of my back, aslike an omen of death.

The dead woman's body, or what is remained of it, was full ofcovered with scars and wounds, in the shape of magical runes.

Her face was all smeared out with blood so it was liter, making her practically unrecognisable.

The second part of the sentence is not really wrong, it just sounds a bit off. I edited it to what sounds a bit more natural to me.

But as soon as I looked at her hand I noticed her unusual marriagewedding ring and I recognised her: it was my mother.

It's nice to stick to one tense here - if you switch between te past and present participle it becomes a bit jarring to read.

I screamed, but theno sound couldn't escaped my lips.

I turned to run into the hotel's hallway, away from all this nightmare into hotel's hallway, but then I saw the deadrotting corpse of thate lady from room 217 standing in front of me who's rotting away and, laughing in a demonic waally.

Tense consistency, and I also tried to rearrange the sentence a bit to sound more natural. Additionally, dead corpse is unnecessary. A corpse is dead, so you can lose the dead.