A Vastu mirror at the entrance can have some great effects on the energy of the home. Mirrors can be hung in a variety of ways, and they are not necessarily the same shape and direction. They are also called Asprin in Vastu and feng shui. A mirror can reflect negative energy and promote an endless bounce-back. But if you place a mirror in the wrong place, you could be ruining the energy of the whole home.
Placement of a mirror in the south west is not recommended because of the effect it can have on the energy of the house. As earth absorbs water, placing a mirror in the south west will have adverse effects. Mirror placement in this direction can lead to domestic strife, strain in personal relationships, and disrupted stability. This is the opposite of the intended effects, so make sure you have the right kind of mirror in the room before installing it.
While a mirror in the west direction is not optimal, it is still acceptable to place it in the east, which is represented by the element air. The best shapes for this direction are rectangular or waved mirrors. Avoid circular, square, or triangular mirrors. A brown border on a rectangular mirror will help reduce the negative impact of the placement. The exact placement of a mirror at the entrance will depend on its placement and orientation.