Both in that case are a copyright violation, depending on which images your source. Collages are a frequent example of this, it’s already an answered problem.
Collages when used in a transformative way are not a copyright violation. It’s mostly a case by case thing because people will make a “collage” that is just an image with some sparkles around it.
The example you’re responding to where you make a picture of your face would almost certainly not be considered a copyright violation.
Both in that case are a copyright violation, depending on which images your source. Collages are a frequent example of this, it’s already an answered problem.
Collages when used in a transformative way are not a copyright violation. It’s mostly a case by case thing because people will make a “collage” that is just an image with some sparkles around it.
The example you’re responding to where you make a picture of your face would almost certainly not be considered a copyright violation.