Canvas Gallery Wraps are available in numerous sizes on ready-to-hang frames. For canvases, part of the image will wrap around the wooden frame, cropping out part of your image. It's important to be aware of the cropping margin so that important parts of the image are not being wrapped around the edge of the canvas.
Clients are able to adjust the crop when reviewing their Shopping Cart by clicking on the Edit Crop link under each image. You, the photographer, are also able to review and edit crops using the optional Order Delay feature.
The content of the blue border will be the portion of the image that is wrapped around the frame of the Gallery Wrap canvas.
If part of the image is appearing inside the blue border/crop preview area, you may want to consider editing the file before the Order is submitted to the Lab for printing. Each Lab has different wrapping requirements, but typically a 2" wrap is standard.
For example, if you are using WHCC as your fulfillment Lab, you will want to allow an extra 2" on each side, for a total of 4 extra inches to your final image size. An 8x10 gallery wrap canvas will actually print the image at 12x14, and 2 inches on each side will be wrapped around the sides of the frame, leaving the 8x10 image displayed.
To extend your resized 8x10 image by exactly 2 inches around all edges, open your photo in Photoshop, and go to Image > Canvas Size > and enter the width and height (in inches) that you would like added to your image, making sure the anchor point is set to the middle of the Anchor box as seen in the screen shot below. This will give you an even border around your full image.