Cut the pieces for the drawer fronts. Drill the holes for the handle or knob placement. Shim in place in the opening (there will be a 1/8” gap around all sides) and drill a temporary screw through the holes into the drawer boxes. Open the drawers and secure the fronts to the boxes from the insides with 1-1/4” screws. Finish drilling out the holes for the handle or knob.
Cut the pieces for the doors and assemble as shown, in the same manner as the sides. There will be a 1/8” gap around all sides of the doors. Attach the hinges to the doors, then shim in place and attach the hinges to the cabinet.