skirt and the bumperpads.
You will need:
2 yards of material
40 " (or 2 yards if you want the elastic all the way around the sheet) of 1/4" elastic
1. Measure your crib mattress. Height, width, and length. It will probably be 52x6x27" because that's one of the standard sizes of mattresses. Now it's time for some math.
Add your height and double your width. Add 3" for seam allowance and "hugging allowance" (68" approx.).
Add your length and double your width. Add 3" for seam allowance and "hugging allowance" approx. 44"
**If you're going to wrap elastic all the way around the sheet, just start and finish at the same spot and pull the elastic through. Start with two yards of elastic and if it looks too loose, pull the elastic tighter until it's the right fit and sew both ends together before sewing the casing closed.