(Be sure to extract PSD files from their ZIP before editing or else you may receive a message that the file is locked when attempting to save.)
Contains PSD templates for creating custom Event Mate / Memory Mate backgrounds in E-Special Events
Right-click an above image and choose "Save Target As...". Save the file to a new "Masks" folder. When using D3, click on the "Masks..." button and select one of the files in the Masks folder to serve as the image mask.