In addition, if the jamb sticks out or is set back slightly ... Where the shoe meets the door casing trim, cut at a 30-degree angle the portion that sticks out. Predrill and nail the base shoe ...

If the window or door jambs are flush with the wall, it is easy to make standard 45-degree cuts and the trim will fit together perfectly. More often, the jambs extend out from the wall so the trim ...

Once all the trim is removed, you will be ready to install ... You will have to extend the window and door jambs out to the outer surface of the new drywall. Use lumber with a high-quality finish ...