I wanted to try another frame.
So I cropped the picture with a square 550x550.
I set the levels (just the black point +4).
I increased saturation +20.
I used a contrast mask with a gaussian blur of radius 10 pix and I set the layer opacity to 50%.
Some noise appeared so I used the Despeckle function with a radius of 1 pix.
I added a black frame of 50 pix.
I hope you will like it.
Amicalement,
Michaël