Creating Dvd Cover Template in Photoshop

I have set up a DVD template which will be used for my DVD cover, this template will contain guidelines which will separate the front panel from the back and the spine which is right in between these two. This will be as accurate as possible as it must meet the correct Amaray Inlay which would be used for an official DVD cover. The requirements for creating this is:

• The printed paper sleeve for a standard DVD case can be printed on a standard A4 of paper 

• The size of the front and back panels of the case is 129.5mm × 183mm and spine panels have a width of 14mm or less.

• Bleed areas must be 3.175mm all around.

• Text and images should be at least 1.5875mm from any edge

• Projects need to be at least 300 DPI in the CMYK colour space

To begin creating this I open a new project in Photoshop, and changed the canvas size from its default one which Photoshop had set. Notice I have also changed the colour mode from RGB to CYMK Color because CYMK is specifically used for printing image.