Instructions:

background:
add any background to the "background folder".
you can also use the included backgrounds.

"new" label:
you can move the layer as desired, or disable visibility.

adding print design:
Double-click the "print" smart object layer to replace the design, 
add any picture save the smart object file and close it.
notice that the visiblity of the "print" smart object should be enabled.

solid color:
Double-click the "color" layer to choose color as desired.
disable visiblity of the "print" smart object.

Save the file and put it in your site or catalog.