1. Preheat oven to 350 degrees. Line the cookie sheets with the parchment paper.
2. Knead the cinnamon and flour into the sugar cookie dough until smooth. Roll out to a scant 1/4-inch thickness. Using the printable template or cookie cutter, cut out the heart shapes, re-rolling the scraps if necessary. Using a straw, press out 2 holes at the top of each cookie (use the photo as your guide).
3. Transfer the hearts to the cookie sheets and bake for approximately 12-17 minutes, or until golden brown. Remove from oven, transfer to a wire rack, and let cool completely.
4. Divide the frosting into 4 small cups. Tint 3 cups of frosting in your desired colors, leaving one cup white. Spoon the frostings into individual, small resealable plastic bags. Snip a small hole in a corner of each bag. Pipe poems, wishes or sweet sayings onto the hearts. Decorate with randomly arranged M&M'S® Brand Milk Chocolate Candies for Valentines Day, attached with frosting. Set aside at least one hour to allow the frosting to firm up.
5. When set, lace the ribbon through the holes. Present this very special heart to your Valentine to wear all day! Tip: If you want to send these special hearts, use royal icing instead of frosting. You can follow your own recipe, or buy a meringue mix, which will have the instructions.