No watermarks or other artist identification is permitted on the front side, so that the voting will be blind and unbiased.
To clarify: the final mounted print size is limited to 18"x12". If you want a border around your print, you'll need to print it smaller than 18"x12", perhaps by including a half-inch white border in your source photo.
Glen paid $21 total for his two prints at Walmart, and they were ready 2 hours after he placed his order and specified the pickup location.
Steve paid $15 for each print through Mpix, and they arrived in 5 days.
Each print should be mounted on foam board using something like this photo mount spray adhesive (these are just examples, cheaper alternatives are surely available). Steve says that Dollar Tree has cheap but terrible quality 20"x30" foam board for $1.25, and Pete mentioned foam board with adhesive already on it is available. Members have been happy with foam board from JoAnne Fabric (oops) and Michaels.
To clarify: the foam board size is limited to 18"x12". If you want a border around your print, you'll need to print it smaller than 18"x12", perhaps by including a half-inch white border in your source photo.
Put your name on the back side of the foam board mounting (perhaps just a return address label), and also an indicator for "UP" if it's in any way ambiguous like some of Jeff's creations are.