When the sheet is ready, lubricate one edge with water, this will help to paste together the dough. Spread the filling (about a teaspoonful) at a distance of two fingers closer to the wet edge. Cover the top with a sheet. Further it is very important to release all possible air. To do this, first glue the side seams, slightly squeezing the air to the edge, and then the front, pressing fingers from the filling to the edge.