Problem using background shortcode

Dear wordpresses,

I need your help. I’m very new and confused how to correctly use some shortcodes.

Would like to add this image:

https://www.publicdifferent.com/wp-content/uploads/2012/12/conductive-9-sleeve-web.jpg

To this shortcode:

[background bokeh=”no” particles=”yes” overlay=”no” slice=”yes” sliceglimmer=”yes”]
[background_image]{THEME_ROOT}/images/stars1.jpg[/background_image]
[background_image]{THEME_ROOT}/images/stars2.jpg[/background_image]
[background_image]{THEME_ROOT}/images/stars3.jpg[/background_image]
[/background]

I tried several ways but everytime it results in scary white page.

Please advise how this image should be inserted right.

Thank you very much!