It's time to sleep. I will go wash up, brush my teeth, and use the loo/bathroom/toilet (options that sound more American if you want that) first. Then I put my quilt aside and arrange my blue-and-white-striped/checkered (either stripes or checks) sheet to clean and swipe the dust off of it and make it neat and tidy (the sentence almost makes sense, but not quite. Maybe change the verb “arrange” to be more particular- shake, beat, pat, etc.). Next, I grasp/grab the pillow and shake it to make the filling more even, and then I put the pillow towel on it to keep up and down in order (I don’t know what you mean by “keep up and down in order). The following step is to put the quilt back neatly. Subsequently (kind of a big and fancy word, not bad, but not often used informally), I take off my shoes and coat, roll up, (what do you mean by roll up?) and get into the quilt pit (quilt pit? What do you mean?). Finally, I lay on the bed facing the sky slowly (what do you mean by “slowly”? It’s not correct here but I’m sure there’s a way to say it). In around 3 to 5 minutes, I (will just) fall asleep (I would take out what I put in parentheses). I always back against the bed whatever I'm sleep laying on the bed. (I don’t understand this last sentence)

It's time to sleep. I will go wash, brush my teeth, and use the loo first of all/before anything else. Then I am will put my quilt aside, and then I will arrange my bed with a blue and white stripped sheet to clean and swipe the dust off it to make it plain and tidy. The next step is to grasp the pillow and shake it to make the filling more even, and then put the pillow towel on it to (grammatically correct, but I don’t understand: keep up and down in order). The following step is to put the quilt back neatly. Subsequently, I take off my shoes and coat, roll up, and get into the quilt pit. Finally, I lay on the bed facing the sky slowly. After about 3 to 5 minutes, I will just fall asleep. I always sleep on my back.

It's time to sleep, but I will shower, brush my teeth, and use the loo first. Then, I will put my quilt aside, arrange my blue and white checkered sheet to clean and swipe the dust off, then make it neat and tidy. The next is to grab the pillow and shake it to make the stuffing more even, and then put the pillow towel on it to keep up and down in order. The next step is to put the quilt back neatly. Subsequently, I put off the shoes and coat, roll up and get into the quilt pit. Finally, I lay on the bed facing the sky slowly. In around 3 to 5 minutes, I will just fall in sleep. I always back against the bed whenever I sleep lying on the bed.