AI Prompt for Hand-Drawn Yuru-Kyara T-Shirt Mockup

"Create a white t-shirt product mockup (flat lay, front view, plain white background). The t-shirt design uses black line art only. No color fill. No shading. White shirt throughout. Illustration style: hand-drawn with a soft pencil or crayon. Lines are slightly wobbly and uneven, with inconsistent pressure — some strokes faint, some darker. Outlines do not always close perfectly. The overall impression is a casual, childlike sketch — imperfect but charming. Minimal detail. No clean vector lines. No digital precision. The t-shirt has four printed zones: TOP CENTER: Reproduce the festival logo from the first attached image exactly as-is — do not alter the font, layout, or graphic style in any way. Place it prominently at the top center of the shirt. Make it large enough to read clearly. Do NOT apply the hand-drawn or yuru-kyara style to this logo. TOP RIGHT: A hand-drawn jagged speech bubble (spiky, explosive edges — like a shouting manga effect), slightly smaller than the character illustration. Inside the bubble, write "{argument name="dialogue" default="【ここにセリフを入力】"}" in clumsy, uneven hand-lettered characters. The bubble and text should feel comic and energetic. MIDDLE: Redraw the character from the attached image in a loose, casual, yuru-kyara style — simplified, childlike, charmingly imperfect. Use the attached image as the sole reference for pose, expression, and content. Draw the character smaller — occupying no more than 40% of the shirt's height. Leave generous white space around the figure. The speech bubble may overlap with the top portion of the character illustration. Do not shrink the character to avoid overlap. BOTTOM: The artist name "{argument name="artist name" default="【ここにアーティスト名を入力】"}" hand-lettered in uneven, shaky characters — as if written slowly and clumsily by hand with a pencil. Keep all elements well-spaced and balanced. Clean, minimal, no background decoration."