Not exactly..
In fact, you can copy and/or use as you want a picture that is under public domain or CC0 license for example, without having to justify anything.
For a BY-CC, it will depend of license
- A BY-CC allows you to use a picture but you have to provide credit to of original author
- A BY-CC ND allows you to use a picture but you don’t have the right to modify it
- There’s also some other BY-CC licenses
And a copyrighted picture, forgot, too much constraint and too risky too use, you might have to pay to use it…
The most complicated is to be able to determinate under which license a picture is.
The same image can be found anywhere, without any information about original picture, credits, and licenses…
I’ve provided here some link where you can find pictures under license allowing you to do what you want:
After, you can always use picture under a copyright, but for a personnal use only (ie: you keep the result for you and do not publish it, or at least, do not publish it on KA)
Grum999