If the Tibetan symbols where added to the Usui Reiki ,what is the proper symbol to use for atunments?

Answer 1

Use the symbols that your master told you to use, and draw them the way s/he taught you.
Every school of Reiki has slightly different symbols. You have to be attuned to them for them to work. So taking a symbol you found somewhere and trying to use it, or a method you read or heard about, probably won't work.
The method of healing I teach, Shamballa, has moved beyond symbols into pure energy, which is the future of energy healing.