I have received an Illustrator file, as an entry for a competition that I had organised, but I seriously doubt the illustration is completely original and suspect that parts of it are copied from other sources.
I need to be sure of it. How do I find out?
If you search the elements that stand out to you as unlikely through Google’s reverse image search, that should help.
Obviously you do not want to search for simple elements, but ones that show clear thought and possible originality would be great to use for the reverse search since those are likely to narrowed down as far as possible locations they could originate from.