Excellent Françoise. As I'm sure you know, the artist who popularised this technique is David Hockney; he made them initially with polaroid photos and later with commercially processed 35mm prints, sometimes using very large numbers of individual prints. He called them 'Joiners' and this image of yours is very reminiscent of his early work in this genre. A Fav for me.
Another nice shot. How are you doing it - is it a single shot that you make multi copies in post production and then arrange or are you taking multi shots - must give it a go myself