Create a whimsical nail design featuring "bubble nails," where each nail resembles a playful, translucent bubble. Imagine soft pastel colors with shimmering highlights that capture light from every angle, similar to soap bubbles floating in the air. Incorporate subtle gradients blending into each other, and add tiny iridescent specks for an ethereal effect. Enhance the playful theme with hand-painted delicate lines mimicking the delicate film of a bubble. Design it with a balance of elegance and fun for a truly unique and captivating look.