Julie posted a bonus sketch on her blog and on OWH Stars and Stamps. Here's what I came up with:
Cards shipped to OWH in 2012: 928 blank and 215 AnyHero (as of 6/26)
Cards shipped to OWH in 2011: 1695
Check out OWH at www.operationwritehome.org to learn more about its mission and how to get involved.