Combine flour and salt together in a bowl
Cut in shortening with pastry blender or two forks
Sprinkle in water 1 tablespoon at a time and mix with pastry blender. Dough will crumble in chunks and form together but should not be sticky
Form into 1 large ball and then split into two dough balls
Layer surface with flour and roll out your dough into two round circles
Spray pie pan with cooking spray or coat with butter
Lay 1st dough down, pour in your berry mixture and layer with your cornstarch. The cornstarch can also be adding to the berry mixture in the beginning
Cover pie with 2nd dough ball. Using a fork, poke holes in crust to allow steam out
Bake at 400 degrees for 30 mintues. Reduce heat to 350 degrees and bake another 30 minutes or until the crust has browned and is bubbling.
Take out and top with more sugar if you prefer