Now this is a refreshingly different post. I had never heard of mirror writing in this context but in the context of kids writing some letters backwards. Is there any scientific explanation as to why you can do this and others can not? Its like being left handed and right handed at the same time.
How was growing up for you? Did you start left or right handed? Many cultures I know promote the use of the right hand over the left hand. Left handed kids are sometimes beaten for using the 'wrong' hand to give or take things from others. This is really fascinating.