Create a vibrant header for a decal store named "GOURMANDS GONE WILD." The design should feature whimsical Kawaii food characters, such as smiling sushi rolls, cheerful donuts, and playful tacos. Incorporate funny food-themed phrases like "Stuffing is My Love Language" in a playful, bold font. Use a bright color palette with pastel shades and eye-catching graphics to evoke a fun, foodie atmosphere. The overall feel should be lively, humorous, and inviting, appealing to food lovers and trendsetters alike.