Along with A2 sized embossing folders, Cuttlebug sells smaller ones which can be used to make borders. Here I have used part of one, as a switch from a ribbon border. I like how it adds dimension to the card. No reason why this couldn't be taken one step further and highlighted with a sweep of ink.
Stamp: sentiment (Stampin' Up), corner (PSX)
Ink: Staz On black
Papers: burgundy cardstock (Lasting Impressions), blue & black cardstock and patterned paper (SEI)
Accessories: embossing folder (Cuttlebug), border punch (EK Success)