Working with phyllo dough can be tricky. For ideal results keep the box refrigerated until you are ready to use it. If you buy it frozen, thaw it in the refrigerator overnight. When ready to use, unroll the pastry onto a work surface and keep it covered with a slightly damp towel (moistened with a mister rather than drenched under the faucet.) If it gets too wet, the moisture will cause the sheets to stick together.