Photo: Creating a Book Cover

[JM1]

I have done this many times in Photoshop but I am trying to switch everything over to Photo. I need to create an image for the cover of a book. The image has to cover the entire book.

I have created a new color image the size of a book cover. The image size is the front+back+spine+wrap around. I have placed reference lines at the start of the overlap and at the ends of the spine.

I place the image I want to use cover and position it  The image is in the right half of the cover so that it will appear on the front.

Now I want to crop the image using the reference lines on the cover as a guide. How do I do that? When I use the CROP tool, it wants to crop the entire cover, not just the cover image.

After that problem is solved, I would like to extend the image in all four directions to so that the back and wrap areas blend to the image. Part of a cover using Photoshop below. How would I do that in Photo?

[thomaso]

39 minutes ago, JM1 said:

Now I want to crop the image using the reference lines on the cover as a guide. How do I do that? When I use the CROP tool, it wants to crop the entire cover, not just the cover image.

Select the Rectangle Tool -> draw the desired cropping size -> apply a fill colour -> move this Rectangle layer onto the thumbnail of the image layer to use it as nested cropping mask. (alternatively, vice versa: Move the image layer as child layer into the rectangle layer to use the rectangle as clipping mask.)