In this tutorial, we learn how to use the feature keys for your Cricut machine. There are six feature keys on every cartridge. The first is the shadow feature key that create a matte to highlight your letter. The shadow blackout key creates a solid matte that doesn't cut out the holes in between the letters. The charm feature key puts a charm top on the top of letters. The sign feature key puts letters inside of a small sign post, making it one inch from top to bottom. The slotted feature key puts the lettering into an oval tag shape that you can slide ribbon through on the top. These are the great features on the Cricut machine that are easy to use!