Circuit Direction.
It is important as you approach the airfield to be in the correct position in relation to the circuit direction.
Within three or four miles of the airport.
Left hand circuit, keep the field on your left and continue turning left overhead until you cross the threshold of the landing runway.
You are now on the dead side and descend as discussed
Right hand, keep the field on your right.
This is simple and prevents aircraft turning in the incorrect direction overhead.
On too many occasions I have encountered aircraft turning in the wrong direction whilst they attempt so join overhead.
Keep it simple. Kiss