I am totally hooked on single layer cards. They are not as easy as you would think and the most important ingredients are good quality paper, and a fantastic stamp and sentiment.
Close To My Heart Stamp
Creative Moment Blogger - Anything goes
Anything Goes Challenge - Traditional Christmas Colours + DT Call
Through The Craft Room Door Always Anything Goes!
Paper Playtime - Christmas Colors
Speedy and Friends - Christmas Card, use Red and Green
Moving Along With The Times - Clean and Simple