Metallic Silver/Grey Hair

So I did this beautiful metallic silver/grey hair on my instructor the other day! It took 3 sessions but we finally got her to where she wanted! I actually lightened her again after the before pic i have here and gave her a darker smudge to make the silver/grey standout more. She had all kinds of blue's, and purple's in her hair before i bleached her. So after that i toned her to eliminate the undertones of yellow in her hair. Then added a blue/grey based color with violet shots! And it created this beautiful master peice! Do not forget that hair like this does not happen in 1 lightening process, she did this in a 2 and a half month period because silver hair will not come out silver unless you are as light as you can be and you also want to do it in a healthy way for your hair.