No it is not. But may well become as such.
Yesterday in the Daily Telegraph newspaper here in the UK.
there is a report of the winning entry of the "Landscape Picture" of the year being cancelled and withdrawn due to "over photoshopping"

That coupled with "National Geographical" mags decision not to accept any future photographs that have Post Processed.

Gives food for thought

Subject well shot!For me, I would have cropped the pics closer
to eliminate some of the extraneous background After all the subject is the Horse and Rider.
Picasa is a great simple tool to achieve what is needed