My idea for your logo was to play on the double 'c' in your business name, which led me to "c squared" as the imagery. As the shape took place, there was a very obvious half-heart forming between the C and the 2, so I highlighted it subtly in each variation. If the heart isn't your cup of tea it could also be left out. Also, if you'd like to see any other color combinations or have any other ideas let me know :) Good luck with your contest!