Personalization is possible if the creator of the product makes it a template item, as I do.
One way one might personalize a stone magnet is to replace the image with one’s own. No one will make a product showing your family members, but you can if you have digital images. Zazzle does have a pixel size for good results, and some negative comments come from people using their own image with too few pixels. However, if you pay attention to the upper right of the image and Zazzle determines the image is too large for the pixels a warning message appears. Click the blue bubble and read any message and you will avoid disappointment. In fact, Zazzle sometimes offers to enhance an image, and it is a good idea to allow the enhancement.
Another personalization is to add words, such as names. Here you have several options, placement, font size, which font you want, and color.
A good reason for personalization is if the product is going where English is not the primary language. A Christmas magnet might have Merry Christmas on it, but the customer might prefer, for example, Noel or Feliz Navidad.
Zazzle uses layering, the top layer obscures layers below . The background image always drops into the lowest layer Centering is easy, just move it up or down, then left or right. When you center a fine green line appears.
If wording is desired it goes in the final layer.
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