How you submit your work depends on the type, size, and quantity of files you wish to submit.
You can submit most files yourself via the Scholars Junction web interface. Larger files, or large collections of files, must be submitted differently.
You can save yourself a lot of work by simply submitting a list of your publications - Scholars Junction staff will create a record for each item and help you determine whether you might retain the right to deposit a version of the file in Scholars Junction.
See a guide to submission types.