Crimping the pie crust not only creates a decorative edge, it also seals the top and bottom crusts together. There are many ways to crimp the crust, from fluting the edges with your fingers, to pressing a fork or spoon to make a pretty pattern. For a different look, cut 3 long thin strands of dough and braid them together. Brush the edge of the pie with milk or an egg wash, then carefully lay the braid on the edge. Brush the braid with the milk or egg wash before baking. You'll need an extra pie crust layer to have enough dough to braid.