When I make art, I almost always only use images, photos and drawings taken or made entirely by me. But there are of course few exceptions. Like the bodyswap images that are originally ripped out of magazines, glued to paper, scanned and remade in Photoshop. Or photographs that I've taken of art made by someone else and created new art from that. It's impossible of course to make everything yourself if you are like me, someone who likes to take photos outside. At this point of my life I have not yet built a single escalator or a boat, but I hope it's obvious to everyone. And then there's also the thing that if the things that I've photographed, were copyrighted, me taking the photo certain way, including surroundings and remaking that photo entirely again in Photoshop, would make it original enough so that the copyright wouldn't apply anymore.
With clip art, images and photos copied from the internet you need to be extra careful because when you just copy the photo, you have not yet added anything original to it. You can derive your own art from it but you have to know which ones and almost always you should mention the artist behind the original art. Or at least mention which part isn't made by you. I'm not going to tackle that subject again as I already did write about copyright, fair use and exceptions about a year ago, but the advises are still valid. The point in that post is that you should always be honest about your art and give credit.
I couldn't agree more with
As I already said, I usually don't make art derived from images made by other people. But I should! I should use CC0 clip art and public domain photos more as I love to make collages and I really appreciate very much those who do. One great artist is 
Haven't made a new mandaloscope in a while so I thought I should do one. This hummingbird was one of the images used in NFT Showroom online art show at the end of October and I got inspired. Yes, it took me this long to write about it.
The original hummingbird can be found from the internet, for example with the search words: hummingbird transparent cc0.
I thought that it needed a tongue and a fiend to be all humminbirdy.
And then few more friends.
I copied and copied and copied the birds again and again, made them smaller and put one layer after another on top of each other so that I got a background from the original two bird transparent image for the four bird circle. And added something abnormal that breaks the repetition a little.
Now it's a hummingbird spike ball.
Other news
Thank you so much 
Other Kaleidoscopish mandalas:
13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2 &1
GIF animations:
Bullshit hero, .point
NFT Showroom
https://nftshowroom.com/insaneworks/gallery
If the thing you're looking for isn't in the gallery, click All Created Art.