Editing Encyclopedia:Image use policy (section)

=====Diagrams and other images=====
User-made images can also include the recreation of graphs, charts, drawings, and maps directly from available data, as long as the user-created format does not mimic the exact style of the original work. [[WP:Public Domain#Non-creative works|Technical data is uncopyrightable]], lacking creativity, but the presentation of data in a graph or chart can be copyrighted, so a user-made version should be sufficiently different in presentation from the original to remain free. In such cases, it is required to include [[WP:V|verification]] of the source(s) of the original data when uploading such images. See, for example [[:File:Painted Turtle Distribution alternate.svg]], [[:File:Conventional 18-wheeler truck diagram.svg]].

Additionally, user-made images may be wholly original. In such cases, the image should be primarily serving an educational purpose, and not as a means of self-promotion of the user's artistic skills. The subject to be illustrated should be clearly identifiable in context, and should not be overly stylized. See for example [[:File:Checker shadow illusion.svg]]. 

When making user-made diagrams or similar images, [[Wikipedia:Manual of Style#Color coding|try not to use color alone]] to convey information, as it is [[WP:Accessibility|inaccessible in many situations.]]