Hello..
It's a very nice picture! But I'm not sure that it must have an 'amélioration'.. it's not possible I think..
But perhaps modify the picture..!? but not an amelioration...

A saturation and hue fix would help this image, but it would need some air brushing/cleaning with the skin tone and consistency to be a viable wallpaper. It is a little too blemished/inconsistent. It is a nice closeup of an eye, but that is part of the problem, vastly highlighting skin imperfections, and the reflection in the retina looks out of place. A little bit of processing would take this image from good, to superb.

Though, IMO doing a Cel Shaded version, or otherwise abstracting the photo a little would make it even better than leaving it as a straight realistic photo, especially for a wallpaper, not a piece of gallery art. Good start, though.

Disclaimer: I am not a professional photographer or graphic artist, though I do dabble heavily in visual arts and graphical design. So the above is merely MY OPINION how to better a good base photo.

Hi
this wallpaper, it's only a photographs shoot, without any transformation. I'm not a graper, but I'm open to any idea, if someone want made an amelioration, he can use this eyes from picture base.
Don't forget to send me the result

nice photo! mhmm..should be looking nice as wallpaper, if saturation would decreased and the eye colorized ;)

greetings to france :)