「Uncle Dave Happy Birthday From Your Favorite Nephew」は FontVibe AI で作成したバースデーの文字エフェクトです。白フチのくっきりした虹色ストライプの丸い大文字。紙吹雪と風船の束に囲まれ、ピンクからターコイズへの鮮やかなパーティー背景。

A finished birthday gift tag, portrait, filling the whole canvas. The tag is a tall rounded-corner card with a punched hole at top center, reinforced by a white ring and threaded with a twisted cord of tangerine and turquoise string that loops off the top edge. The card face is a vivid saturated gradient from hot-pink at the top into tangerine at the bottom, with a thin white inner border line inset from the edge. Around the card, a dense burst of multicolor confetti (turquoise, yellow, violet, white) and clustered glossy balloons in hot-pink, turquoise, yellow and violet crowd the top-left and bottom-right corners, with bright sparkle glints and soft light streaks. Text, all centered, in bold modern brush-script lettering laid down with a loaded round brush: thick confident strokes, lively thick-to-thin modulation, slightly rough dry-brush drag where strokes lift, letters connected in a fast flow on a bouncing baseline. Top: 'Happy Birthday' on two lines, 'Happy' in sunny yellow and 'Birthday' in turquoise, each with a crisp white outline and a soft drop shadow, occupying about 70% of the card width. Middle: 'Uncle Dave' as the largest element, about 80% of the card width, in glowing white-outlined violet and yellow letters with a bright glossy highlight, slightly tilted upward. Bottom: a small line 'From Your Favorite Nephew' in white brush script with a soft shadow, with a small hand-drawn white star flourish beneath it. Keep the area behind all text clean and high-contrast so every word stays legible. Vivid, punchy, high-energy, celebratory, never pale or muddy.