Bold Playful Typography Design

A 3:2 rectangular layout filled entirely with the phrase "YOUR CUSTOM DESIGN HERE" in bold, bubbly, wavy, playful typography. The text stretches, curves, and fills the entire canvas with no margins — the letters vary in shape and size to perfectly fit the space, like a puzzle. The style is retro-modern, fun, and full, similar to a sticker design or a mockup for a tumbler or t-shirt. White background, vibrant blue letters, a few decorative sparkles between words, dynamic flow, commercial-style presentation.