A cheerful birthday-themed design featuring oversized balloon-style numbers '6' and '7' floating with festive energy. The large puffy red number '6' and bright green number '7' are rendered as inflated party balloons with white circular highlights suggesting glossy balloon texture and dimension. Thin curling ribbon strings attach to each number, spiraling gracefully around them in white with subtle shadows. The text 'six' appears in playful black brush script lettering above, while 'seven' flows in matching hand-drawn style below. Surrounding the balloon numbers are celebratory elements: colorful confetti pieces in pink, blue, yellow, and green scattered throughout, plus shimmering star bursts and sparkle effects creating party atmosphere. The illustration maintains bold black outlines with vibrant flat color fills in a vintage cartoon style, giving it a retro birthday card aesthetic. The composition is perfectly centered with balanced spacing, all elements contained within the design area. Bright even lighting enhances the festive cheerful mood. The design is print-ready, fully isolated on a white background with no shadows or textures, fully contained within canvas boundaries with no cut-off elements and proper margins around all elements, and intended for use in t-shirt printing. | PODspy AI Design
