We want to make an image that is
- 2.75" by 4.75" or
- 70mm by 120mm or
- 897px by 1497px
36 px on each edge will be cropped to get a "bleed" (so that the image goes all the way to the edge.)
We will add a consistant black boarder (or maybe a different style to the edge).
Start a new document and click on the resize button
Set up the dialog like the following:
Click ok.
Start a new document and click on File - then on Poperties
Enter the width and height. It should look like this
Notes: if the DPI shown on your screen is different don't worry -- that does not matter if you specify in pixels
Click Ok and you are ready to go.
On the lower right is a zoom slider -- you can adjust that to make the image a comfortable size to dawn on.