Selling photoshopped images
I'm new to this and I saw a contributor that used a image on google. I assume that it was labeled for reuse so that's why it was allowed. They did some photoshop work on it and made 4 more images with just a different center piece in each one.
So my main question is that if I got a few different images that are allowed for reuse and I did an original creative spin to it in photoshop can I sell that? I'm not a photographer but I like to work on photoshop.
Thank you