Scale, proportion, placement...all of these are key when fitting the right mirror in place. Seems fairly easy to do, but takes some skill to really transform a room...

In this instance a pair of tilted mirrors is just right for this bedroom...

Furniture in front of a mirror, like this settee here works great, but casegood pieces work as well...

Mirror over mirror, love this idea! Makes that full/tight typical bathroom mirror more special...

Another favorite, this mirror is bound to double the size of the room...

These are some tear sheets I've been collecting of room designs that emphasize the right mirror(s)...just wanted to share with you...