I’ve been having fun with software called Spektral Art. It has many variations with their own sliders to customize. It’s very easy to use and is a standalone piece of software. Here are some examples. It is made by JixiPix and costs $19.99 at the present time.

Top left original – top right light Spektral – right center dark Spektral – bottom blended of the two with soft light.

Original and Spektral

Original and Spektral Bright Detail

And a flower for good measure!