Change perspective

Use multiple Stoke images.  Adobe will love you...   Your wallet not so much.  Heck there's another $10 just in the tire print in little composite.  That's three months Photography plan subs in one image.  No wonder Adobe are pushing Stock so hard.

They had videos of the 'Recreate Old Masters' using Adobe stock looping in the Grand Pavilion at MAX.  They used dozens of stock images for each one, with multiple stock images going into each subject in the paintings.

You can see them all in this PetaPixel article​ It was fascinating watching the images come together with a new stock image used just for an arm, and another for a beard etc.  I'd love to know what the stock cost would have been if they were doing it for themselves.

Flip should be easy.

Maybe just flip the sucker horizontally like Flo mentioned? Nobody will know since I don't see anything that would indicate it was mirrored (like text).

Hello there,

two things I can think of

1) edit>transform

if you go for flip horizontal then it's the easiest (and laziest) way to do the job, or you can click on the icon to turn the transform into warp mode and try to affect the sand only - I see that like a suicide mission if you want to keep it real but that's all around your PS skills

2) clone tool

totally painful work, but in this case you'd affect only the area that you are interested in.

Both have downsides and after all puppet warp can do the job too, if you mark the area correctly. But still some clone stamp work will be required.

Inspiration tools, hope something helps!