Stretch a fitted cotton sheet over the mattress. Spread the fitted satin sheet over the cotton sheet.
Turn the mattress on its side while the satin sheet is on the bed. Attach one bed suspender to one corner of the sheet and attach it to the corner situated diagonally from it. Repeat with the second suspender. When you are finished, the suspenders will form an X across the bottom of the mattress to hold the fitted sheet on the mattress.
Lay four or five squares of shelf liner directly on the mattress. Stretch the fitted satin sheet on the bed over the shelf liner.