Spot Glass can be added to "Upload Your Own Design" but it is essential that the file uploaded is set up correctly for Spot Gloss printing.
For best results, we prefer uploaded files with spot gloss be done via a fully-packaged InDesign zip archive that contains all fonts and linked artwork. All elements that need to be spot gloss should be placed on the top layer with the correct stroke fill and stroke colors assigned.
Please reference this pdf for all details on how to set up and send your file for “Upload Your Own Design” spot gloss pieces.
If you still have concerns, please contact our Quality Control Center (800.788.8633).