A2 Insert Card Happy Birthday 3. This is a quick and easy card style to make! Simply insert the corners of the contrasting paper into the pre-cut decorative corners of the card base. The file includes 3 options. 1. Folded Card with insert. 2. Flat Card with insert. 3. Just the just the front cuts to be added to any card base or shape (easily use this option with the Cricut Joy card mat). SVG file for Silhouette, Cricut and other cutting machines.