A standard DVD cover design measures 184mm by 273mm. Depending on your printer and paper size, it is possible to fit an entire DVD cover onto a single sheet of paper (A4 paper is more than large enough). You may need to reduce page margins to zero.

Be creative. Include a few pictures, and some real – or even fake – comments such as: ‘”Amazing…the greatest film of the year” – John Smith from Some Magazine’. This will add some extra meaning to your DVD. You can even add fake bar codes and age ratings (like the MPAA or BBFC ratings) for added realism.
The process for printing on the surface of CDs and DVDs is called silkscreen printing – it is an effective way to print on irregular surfaces, such as t-shirts, coffee mugs, or compact discs.
In the silkscreen process, film separations are made that represent each color in the design. The film is laid on a fabric mesh that is covered with a special emulsion and exposed to light. Where the light hits the emulsion, it becomes solid; where the film covers the mesh, the emulsion remains unchanged, and then is washed off. The screen is then placed on top of the surface to be printed, and ink is pushed through the mesh using a squeegee. The ink is dried, and the next color is applied.
Fine details are easily lost in silkscreen printing because of the mesh that is used. Elements of a design that are too small may end up sitting on the mesh itself, rather than in a hole in the mesh, where ink can pass through. Unfortunately, this mesh interference is an inevitable consequence of the process.
The first hurdle in printing on a CD or DVD is the surface of the disc itself. Unlike white paper, a disc has three distinctly different surfaces, and each one has its own issues. The regular surface of the disc is silver (or reflective aluminum, technically). Depending on the lighting and angle at which you hold the disc, the surface appears to have a tonal value of about 15 percent black. That means a halftone printed directly onto the surface of the disc will lose contrast in the lighter tones.
The mirror band. This is a highly reflective ring just outside the clear center of the disc that contains information about the disc itself; track information, artist, job number, etc. The issues of printing onto the surface are multiplied within the mirror band.
The stacking ring is a lip in the clear plastic center of the disc, between the mirror band and the hole. Elements that cross the stacking ring tend to become distorted. To make things more difficult, the inks used for silkscreen printing are somewhat translucent. Because this area of the disc is clear, the translucency of the inks becomes more obvious, and they will not match the same inks printed on either of the other two surfaces.
There are two solutions to the problem of printing on the changing surfaces of a compact disc. The first is to print a flood coat, usually a layer of white ink that covers the printable surface. This gives the disc a more consistent printing surface, closer to printing on paper. The second option is to make sure any halftones in your design don’t cut into the mirror band or stacking ring.
Article Source: discmakers.com