Cut a plastic sheeting so it will fit inside the base of the basket. This will prevent water from the plant from seeping out of the basket or damaging it.
Secure the plastic to the inside of the basket with waterproof tape.
Cut a piece of floral foam so it will sit in the base of the basket. Place the floral foam inside the basket.
Cut your tulip stems to the desired length and begin placing them inside the floral foam. Place longer stems in the center of the arrangement and place shorter stems toward the side. This will create an oval arrangement.