Once you have chosen a CC license for your material, the next step is to visibly apply the license to the material.
The easiest way to compose a license statement is by using the CC license chooser. Placement of the license
There are no fixed rules as to where you display your license statement.
It's most important to choose a place where the user of your material can easily find it. E.g. in the copyright notice for your work, the footer of your website or the footer of a document.
Author: The name of the copyright holder(s). Ideally include a link to your profile or website.
Source: Provide a link to where the work can be found, so (re)users will be able to retrace its origin.
License: The CC license you have chosen and a link of the license deed.
Presence of third party materials: If you've adapted work by others in your material, note this in your license statement. E.g. This work is adapted from...
Title: Stating the title in your license statement makes it easier for users to attribute. Up to Version 4.0 of the CC licenses referencing the title of a work is required for (re)users of a work.
Year: The year of creation.
Additional permissions: If you want to grant users permission beyond what the CC license allows, note this in your license statement. E.g. Attribution not required for non-commercial use. Note that you may not remove any rights included in a CC license.