This design features a graphic with a playful and humorous message. The text reads "I Solemnly Swear It's My Birthday" in a stylized font that mimics handwriting. The words "I Solemnly Swear" are written in a larger, more ornate font, while "It's My Birthday" is in a smaller, simpler font. The phrase "It's My Birthday" is emphasized by the use of a larger font size and the addition of a playful footprint graphic above the text, suggesting a sense of fun and celebration. The overall design is simple yet effective in conveying a birthday message.