“BY” means ATTRIBUTION, who created the images. The work is by who? Creative Commons Attribution 4.0 International (This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. See also: https://creativecommons.org/licenses/by/4.0/ to read more details of what this license says about what end users can and can't do with the images. One way to credit the original creator is to add the CC BY logo and CC URL link, along with the name of the artist (could be artsuppliescottoncanvasducknj.com) somewhere on the page or in the website.