I thrifted a gorgeous mint twin sheet a couple of weeks ago. I wanted to make a a dress, but realized it would be perfect for my daughter’s crib. I made a crib skirt and a baby sheet which isn’t pictured because I want to wash it before she sleeps on it. For the crib skirt I cut a piece of fabric the size of the mattress and then gathered the mint fabric onto three sides. I don’t care about the length changing when I raise or lower the mattress. I just wanted to get it done.