How To Write A Letter Using Cricut . I do this vs pulling the cards off of the mat to prevent curling. Use the text tool to add letters in cricut design space you can add you own words by using the text tool. How to Connect Letters in Cricut from design.tutsplus.com Click on the text button which i circled in the image below. I recommend making the letters 6″ tall, so the file works perfectly. I modified the file (which is included in the course) to make the letters bigger and to have it ready to use in cricut design space without problems.