50 CFR 91.13 - Technical requirements for design and submission of entry.
The design must be a horizontal drawing or painting 7 inches high and 10 inches wide. The entry may be drawn in any medium desired by the contestant and may be either multicolored or black and white. No scrollwork, lettering, bird band numbers, signatures or initials may appear on the design. Each entry must be matted (on the front only) with a 9 inch by 12 inch white mat, 1 inch wide. The matting must be affixed with clear or white tape holding the matting to the picture. Entries must not be framed, or under glass, or have any protective covering (other than the matting) attached to them. The entire entry cannot exceed 1/4 inch in total thickness.