Sharpening is best left for last when all of the smoothing and retouching has been completed. This will allow for a consistent sharpening of the entire image. Use the high pass filter set to a hard light blend mode.
- Select the original ring layer and then retouching layers.
- Press Ctrl + J/Command + J to duplicate the three layers.
- Ctrl + E/Command + E to merge the layers into one.
- Select Filter, select Other, and select High Pass Filter. Toggle the filter to a higher pixel amount so that it is a little over sharpened.
- Change blend mode on the layer to hard light.
- Toggle layer with opacity slider to find right sharpness.
- Zoom in to see what the sharpening is doing and toggle until it is just right.
- To crop the image, select Image and select Trim. Trim away all sides.
- Use Ctrl + Alt + C/Command + Option + C to open the canvas size window.
- Select Relative and add 1 inch all around.
- Open canvas size menu again to copy width of the image and apply it to the height to make it a square image.
- Flatten it to reduce file size or save with layer to make future adjustments.
