How can I customise the background?
I have a stock photo I would like to upload and use as background. Can I do this?
I am also wondering if I can have a transparent background.
Yep! You can find the background settings where you set image on the right hand side inside the desktop publisher. You can also set "Background Alpha" to 0 on the right hand side in the "Styling" section in the desktop publisher if you want the publication to float on top of a background.