Creating Custom Covers is slightly different than creating a page within a project. The cover sheet is printed larger than a page as it has to be wrapped around the cover boards, prior to the binding process.
What this means is that more of the material may be lost to wrapping and trimming. When working on the cover it is always a good idea to turn on the Safety Zone Warning so you can more accurately see the amount that may be lost in the production process. To activate the Crop Zone Warning, click on the More Button > View > Show Safety Warning.
If you're using an image where too much of your subject is around the outer edges, you certainly don’t have to place the image as a background, where it is stretched to the outside corners of the cover. You can remove the image as a background (Click on the background, then hit the Delete key on your keyboard), then change the page layout to a single image page by selecting the cover page, then click on the Layouts button in the Editing Toolbar. Then you can select a single image layout, such as the first one on the left column. Drag your image from the Media Tray and drop it into the photo well. Resize the image as needed, using the white handles on the edges of the image until it's 1/2 way inside the white wrap zone.
Now you’ve minimized your chances of your content being cropped, or conversely, being left with a white border visible after the book is printed. This is an especially valuable tip for those who like to create their content in another program and then import it into Picaboo.
Another thing to keep in mind when creating a cover for a Classic Custom book is that you cannot stretch a single image from the front cover to the back. You may be able to use the same image on both the front and back covers, zooming in on the right portion of the image for the front. Then you can zoom in on the opposite side of that same image on the back cover to match up where one ends and the other begins. However you should not attempt this with the spine. Another option would be to use an external image editing program to split the image into two separate images, and then place each one on the covers separately.
Where the spine is concerned, it’s best to go with a solid color or use a simple background design. Trying to match up a photo is hazardous as the spine thickness will vary depending on the number of pages in the book. It is near impossible to match an image on the spine as Edit mode and Preview mode cannot compensate for all the variables such as number of pages and binding type.