"Are you wondering if you've plagiarized? Here's a quick guide to help show you what constitutes the many areas of plagiarism and how serious each violation is."
flowchart courtesy of thevisualcommunicationguy.
A key takeaway is
"If you are confident that what you have written and/or designed is entirely original- in concept, style, structure, diction, and everything else - then you have not plagiarized. Or if you have used another's ideas to elaborate on or validate your own, but you cite the original author or artist (and you provide their name and all pertinent information so that your reader could locate the original source on their own), then you are also free of plagiarism violations. Plagiarism-free means you have recognized any and all individuals or organizations that influenced your thoughts, writings, and design and that you have made every effort to cite them according to conventional citation practices."