A mirror is fitted on to the wall in innumerable ways. It can be done either with the help of anchors or with the screws. But in case you wish to remove the mirror you will need a helper to assist you. Firstly the screws have to be removed but take care that you have someone to hold the mirror or it can fall down. It will be better that you begin from the bottom portion and then proceed to the centre.
This will help you to remove the mirror in a safer manner. For protection of your hands you can wear gloves also. Sometimes it happens that the mirror sticks to the wall so in that case you can employ piano wire that will do the work for you. It happens because the mirror is in that position from a long time. So you can always keep in mind the above tips to be on safer side.