If you like, you can view and vote for the entry below:
A QR Design done for the 2011 Int'l Design Contest.
The Concept and Artwork was done in under two hours on the last day for submission to the Contest.
Seeing that I gave myself this challenge, I could not have exceeded the time. Could have been much more but I had to stop just before 2 hours.
By no way, I expect you to give it 5 stars... vote accordingly to how you feel if deserves.
There are many other entries that are well done.