The no-fuss school of nursery decor is happy to be tacky. Cut and hem separate crib skirt panels for each exposed side of the crib. If your crib sits against a wall, you can skip the crib skirt for that side. Tack each panel to the support platform under the crib mattress so the skirt just dusts the floor. When you lower the mattress, remove the tacks and adjust the length of the panels before re-tacking.