When you have an image that you want to print as a gallery wrapped canvas but you do not want any of it to wrap around the edges, you can create mirrored borders! The additional space needed for wrapping is 2" on every side. For this guide I will be preparing my image to print as an 14"x11" gallery wrapped canvas. This means that my file should be 18"x15" @ 300ppi to account for the wrapping of the canvas around the frame. To do this I need to prepare my canvas with an additional 2" digitally mirrored border on every side.
Photo credit: Ross Costanza
Step 1: Crop your image.
To start with, crop your image to the size you'll be ordering @ 300ppi. In this case, I'll be ordering a horizontal 11x14, so I'm cropping and resizing the file to 14x11 @ 300ppi.
Step 2: Duplicate the background layer.
Step 3: Extend your canvas.
You are going to need an extra 2" on all sides. At the top of Photoshop, select "Image" and then click on "Canvas Size." It'll pull up the Canvas Size box. Make sure relative is selected and that your canvas is anchored to the center. Then put in 4 inches for both width and height and click "OK."
Step 4: Ruler Guides.
Ruler guides are helpful to make sure everything is lining up properly. Pull guides from the rulers so that you have 4 guides total, each exactly 2" away from the edge. They should align exactly with your image in the center.
Step 5: Duplicate and rename layer.
We're going to create the top border. Duplicate your layer and rename it "top" so that you know at a glance which border it is.
Step 6: Transform and flip.
With the "top" layer selected, transform the layer (Ctrl + T on PCs, Command + T on Macs). Right click on the image and then select the "flip vertical" option and then click enter on your keyboard.
Step 7: Move layer to top edge.
Move layer to top edge, making sure it aligns exactly with the main image.
Step 8: Repeat process to create bottom edge.
Create bottom edge by repeating Steps 5-7, this time renaming the layer "bottom" and moving it to the bottom border.
Step 9: Create left edge.
Duplicate main layer and rename as "left." Transform, right click, but this time select the "flip horizontal" option. Then move the "left" layer to the left border, making sure it aligns.
Step 10: Repeat for right edge.
Repeat this process to create the right side edge.
Step 11: Merge visible.
To merge your layers, select "layer" at the top and then click on the "merge visible" option.
Step 12: Copy your new background layer.
Copy your background layer so that all the edits to the corners can take place on a copied layer.
Step 13: Select a corner.
Although most of the corner won't be seen because it gets wrapped up, you'll still want to fill it so that the edges where the folds happen will blend and look natural instead of a solid color showing slightly. Use the rectangular marquee tool to select one of the 2"x2" squares in the corners.
Step 14: Select fill.
Right click in selected area and then choose the "fill" option.
Step 15: Use content aware to fill.
Choose "content aware" in the drop down and then make sure the options pictures below are selected. Then click the "OK" button.
Step 16: Adjust fill to look natural at edges.
The edges where the corner meets the borders are what we're really concerned about because they will show slightly on the wrapped canvas. Make sure the areas at the edges line up naturally and won't draw attention.
Step 17: Repeat for other corners.
Repeat steps 13 - 16 for the other three corners. Once they are all filled and look good, select "layer" at the top of Photoshop and then choose the "flatten image" option. Save your file as a baseline standard jpeg in either sRGB or AdobeRGB color space.
Step 18: Load into ROES.
When you pull the image into ROES and into the size you're ordering, the mirrored border should align with the area indicating the border and the center should just be your original image.