Turn the last stud on the first wall sideways and overlap it about halfway past the connecting wall to create drywall backing ...

If the plate material is straight, the bottom plate is installed perfectly straight, and the wall is plumb, then the wall and opening will be in the same plane. Never plumb a wall putting a 4-foot ...

Second, make sure the bottom of the wall has a weep edge and is at least 6 inches above the soil. This allows water to flow off the wall and avoids water from wicking behind the wall from the ground.