You can view the 2010 Valentine's Day Challenge sample banner here.
Also the 2010 Bondage Challenge sample banner.
She also created banners for each of the 8 sabbats in the 2010 The Wheel Of The Year Challenge (samples here).
For this Challenge, entries can be posted any time throughout the year, as it's a year-long Challenge. So if you miss a date, you're still eligible and can qualify for a pretty banner! :)