[ali101love]

I like using magazine clippings when I paint, would it be illegal to sell my artwork since it includes other peoples work (photography)? Or is that okay?.

[joypulv]

If your paintings are on clippings, as collages, then you can't sell those.
If you are copying - it depends on various factors that may require permission. One factor might be how publicly recognizable the photo was, another might be if it's of a famous person.