.net - Centre the background of a TabControl in WPF -

I am trying to get an image to float unstackle in the middle of my tab control. I started down with JMAML which extends the image

I have tried to use VisualBrush with a grid inside it, but I can not get the desired result.

  and lieutenant; ImageBrush ImagesSource = "/ LogoTest; Component / Logo_Final" Alignment = "Center" Alignment Y = "Center" Stretch = "None" />