Using and finding images
In most cases of submitted coursework, images can be used from any source so long as they are cited and referenced correctly, or an attribution added. Be aware of any guidance or conventions that should be followed to avoid accusations of plagiarism or copyright infringement.
If the intention is for the work to be published, distributed, or viewed publicly, then copyright rules would need to be applied. In these circumstances, it is your responsibility to ensure images used comply with copyright regulations.
Before using any sort of image in your coursework, consider the following: