Shadow in printed book

is that the stamp on the top left corner of your design? If it is, it could be that the image you use already had a shadow (part of transparent png for example)

Can you confirm that you used Remini to edit and create the final design? if it handles layers, you could track down where it comes from.

Hi, @Claudio347168671a59, I'm sorry but I've struggled to see any shadow behind a picture in the image you shared of a hand holding the page. (I'm assuming that that's where I'd see the shadow because the other document you shared is the PDF, and I also do not see any shadow behind a picture.)

Can you give me a hint as to where I should focus my eyes to see this shadow?

Thank you