Here are composites of the entries for the 1st 5 monthly competitions of the Club's 2017-18 season. Click on the images to see larger versions.
There are many ways to sharpen an image in Photoshop (and other photo editors), some are built-in, others need a few steps using Photoshop's tools to get there. Here's one popular method, "Luminosity Sharpening", as described by Club member George Hay (the main benefit of this particular method is that it can reduce the coloured halos around edges that other sharpening methods produce). This should work with any Photoshop version from CS onward, but not with Photoshop Elements.
[Editor's note: For anyone using Affinity Photo instead of Photoshop, the steps are the same except that "Amount" in the "Unsharp Mask dialog is named "Factor" and the "Fade" option is under the "Layer" menu. Notice that for either program you must select "Fade" immediately after applying the "Unsharp Mask"]