DIY St. Patrick's Day Square Signs These signs are sure to bring you luck on March 17! Signs measure just over 11” square. This is a WOOD project. Although we select and prep the wood with care, your project will have cracks, chips, knots, and other blemishes that are NATURAL and give your piece a unique character. CUSTOM GUIDELINES: Simple substitutions of words within the shown design and layout can generally be made at no additional charge. However, significant changes to our standard designs or special requests for a completely new design are considered custom and must be submitted via email ([email protected]) at least 7 days prior to your event. If approved, a customization fee will apply.