I put a bottom sheet on the mattress:

If I have a fitted sheet, I slip it over the mattress.

If I have a flat sheet, I tuck it under the mattress.

Then, I tuck the top sheet under the mattress at the foot of the bed.

I pull the top sheet tight

and spread a blanket over the bed

and smooth it out.

I spread a bedspread over the bed.

I fluff up the pillows

and lay them at the head of the bed.

I pull the bedspread over the pillows

and smooth it out.