Spring is here and your daffodils are blooming! Ensure repeat blooms by letting the foliage die back naturally before removing. The foliage should be at least half yellow before cutting back. Removing the foliage too soon will not allow the daffodils to recharge for next year, and you may have fewer blooms.
Also, try to refrain from tying knots in the foliage. It will decrease the amount of the foliage that is exposed to the sun. If you really want to hide spent foliage, try planting daffodils intermixed with daylilies. The new foliage of the daylilies will help to hide the drab foliage of the daffodils.