|Just a quick attempt to see whether the effect of the out of focus leaf could be removed from the top of the Leopard's head.|
The leaf caused three effects, firstly a softening of detail, second a slight colour change, and finally a loss of contrast - so the challenge is to fix them!
Contrast was corrected using Lasso tool (feathered 5px), grab an area and then increase the contrast +5 and optionally reduce brightness a little, deselect. That process was repeated until the head had roughly the correct brightness all the way across. The reason I used a repeated grab/deselect was that otherwise you'll see a boundary where the process was repeated, if you grab a slightly different area each time then a boundary line is less likely to form.
NewLayerViaCopy, sharpened the new layer with USM to reduce the softness - then used a soft-edged eraser to knock out the areas we don't need sharpened.
Finally used eyedropper to grab an area of the correct colour, and used Airbrush in Color mode at 10% to paint the colour back to roughly the correct value.
I hope you like it :)