I was curious to find out what "monastic bed-making" is. It sounds different and minimalist, almost austere. But it turns out that what's old is new again, and monastic bed-making is the way your mother taught you to make a bed when you were a kid. Or at least my mother did. The finished look is a bed completely covered by the bedcover, including the pillows, with a little crease showing where the pillows are.
This method was used back in the olden days when a bedspread was used to keep dust, pollutants, and hair from settling on your sleeping surfaces. It may look a little retro compared to the more common style of piling multiple sleeping pillows and throw pillows of different colors across the top of your bed, but it apparently coming back in style. Architectural Digest has complete instructions in monastic bed-making, including the length you need to fold the cover down to accommodate the pillows. What makes their examples seem so lush and stylish is the fact that the covers flow right onto the floor on all sides. That looks nice, but unless you are pet-free and child-free and keep your floors very clean, I wouldn't recommend it. My covers aren't that large, but I have a very retro piece of linen called a "bed skirt" that should find its way back into style soon.
(Image credit: William Jess Laird)