Hello @luchobass. It would be best if you add a link to the photos where you originally got them. You may simply do this:

[Source](link)

Since content on the Hive platform is monetized, using other people’s ideas or images could be considered as an offense and which is also viewed in a serious light on the blockchain. Here is a useful collection of resources about how plagiarism and abuse is viewed and handled on Hive.