Log in to your Lumin account.
Open the document you want to download.
Click the options button on the top right corner.
Then, select the Download.
Select the format you wish to save the document as; .pdf or .docx.
Finally, select Save to Google Drive or Save on your computer.
TIP: Downloading a document leaves any edits you made in Lumin editable in the downloaded version. To download a document and have the edits uneditable, use the Print - Save as PDF option.