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Hello @christinaa, thanks for warning me, I did not know anything about images with copyright, the ones I was using were not public domain, I was researching and I found a web page called wikimedia commons, where I found the images that I am now using, I hope that you can review them, and at the same time tell me if everything is ok.

Images are okay now... U might want to mention the author name when u give the image source for CC 3.0, 2.0 licensed images.. U can visit our discord server if u feel like u might need some assistance from our mentor team..
Good day..!