Here is the one I made for Halcyon, using Kim’s Aug CC swatch. You can see the texture I applied for my paper on the right hand side of the Indian Cotton lace border, and on the left, the gradient as it comes.
Loading the .grd file should be child’s play. In Photoshop (from CS onwards I believe) you can just drag the icon onto your Workspace and it will load automatically. Look for it at the bottom of your panel of Gradients. You then use the Gradient tool as normal to apply it in your projects.
There are lots of YouTube videos on how to make your own custom gradients.
Check out a good one here: