Learn more about the elements of setting up the Media Library Modules (Administrator Step 1) here.
While setting up a Media Library Selection Page, aka the Work Sample Select page on some existing or cloned cycles (Administrator Step 2), craft your own language for the Info/Instruction section or use our suggestion found here.
For additional help for your applicants, review and offer these written tutorials about the Media Library tools.
Instead of, or as well as, you can ask for media on a Custom Narrative page. Learn about constructing this type of page or these types of questions here.