Yes, many people make drawings and artwork with their own ideas, or by taking ideas from someone else and turning them into something new. But when you make a new copy of something that has already been done or something that someone else did as it is, you should always add the source or reference image, if you don't do it, the user makes you feel that the idea of the work is 100% yours, and it can be considered as plagiarism.

The issue of plagiarism goes beyond just text and images, it includes ideas, expressions, it would be considered plagiarism if the source is not mentioned, even if it is royalty free or commercial material, but you must always give credit, since original ideas always have more weight than copied ideas.

Without a doubt, this way you could differentiate and appreciate those artists who develop their own ideas with more value.

Maybe this is one of the reasons why the great artists mostly visit other publications like #thediarygame, which are 100% original articles.