To contribute to a Padlet in Twinspace, users must first register or login at padlet.com. They can then access the Padlet by logging into twinspace.etwinning.net and clicking on the "Celebrate the European Day of Languages" subpage, where the Padlet is located. When making a post, users should include their name, class, and city in the title and add reflections on the theme in the text field. Various types of files can be added by clicking the plus button and selecting the file type. Posts are automatically saved when the user clicks outside of the post area.