画像生成プロンプト集
先生（女性）× 入学式・春・桜テーマ ／ イラストACダウンロード最大化設計版
🔒 ベースプロンプト（全素材共通・必ず毎回入れる）
Flat vector illustration style.
No shading, no gradients, no textures, no drop shadows.
Clean dark brown outline, uniform stroke width, slightly thick.
Pure white background only, no background elements.
Centered composition with generous white space around the character.
// キャラクター共通仕様
2.5 to 3 head-to-body ratio, slightly chibi proportion.
Soft rounded face, medium-sized oval dark eyes with one small white highlight.
No eyelashes. No detailed nose (tiny dot only or omit). Light pink blush on cheeks.
Simple small mouth, gentle warm expression.
No complex shading on face.
// スタイルルール
Muted pastel color palette only: dusty blue, dusty pink, dusty green, beige, soft navy.
No bright primary colors. No neon. No black fills.
Full body visible, arms slightly away from body, clear readable silhouette.
Designed for Japanese school newsletters and printed handouts.
NOT anime style. NOT realistic. NOT 3D. NOT kawaii-extreme.
Simple, clean, trustworthy, warm and approachable.
上記をコピーした後、下の各プロンプトを後ろに追加して使います。1回の生成で4〜6枚出力してバリエーションを確認してください。
A young Japanese female school teacher in her late 20s.
Shoulder-length dark brown bob hair with straight bangs, slightly tucked behind one ear.
Wearing a muted dusty blue cardigan over a simple white blouse.
Simple navy knee-length skirt. Black flat shoes (simplified shape).
Calm, gentle, and trustworthy expression.
Slightly younger-looking but composed and professional.
The teacher is smiling warmly, extending one arm outward to the side
as if welcoming or guiding someone.
Three or four simple cherry blossom petals (sakura) floating gently around her,
drawn in the same flat style, small and minimal.
Plenty of white space above and to the left for text placement.
Vertical composition (portrait orientation preferred).
Joyful, hopeful, welcoming atmosphere.
The teacher is pointing upward diagonally to the upper right
with her right index finger extended clearly.
Her other arm is relaxed at her side.
Confident, friendly expression with a gentle smile.
Large empty white space in the upper right area for text overlay.
Vertical composition. The character stands in the lower left area.
The teacher is bowing politely at about 30 degrees,
hands placed neatly in front of her body.
Eyes gently downcast with a soft smile.
Simple cherry blossom petal (one or two) near the top corner.
Generous white space. Centered composition.
Respectful, warm, and welcoming atmosphere.
The teacher is standing facing forward,
both arms relaxed naturally at her sides, slightly away from body.
Warm genuine smile, making gentle eye contact.
Symmetrical, balanced composition. Centered.
Maximum white space all around.
Calm, approachable, reliable feeling.
The teacher is holding a rolled diploma scroll with both hands,
as if presenting it forward.
Proud and warm smile, slightly ceremonial posture.
The diploma is a simple white rolled scroll with a small ribbon, flat design.
White space above for title text. Vertical composition.
Celebratory, warm, emotional yet calm atmosphere.
The teacher is standing with a happy welcoming smile,
one hand slightly raised in a gentle greeting gesture.
A few simple flat cherry blossom flowers arranged loosely around her
(not a full background, just 4-5 scattered blossoms in the same flat style).
White space in upper area for title text overlay.
Joyful, fresh, spring morning atmosphere.
The teacher is holding a blank white rectangular board or sign
with both hands, facing the viewer.
Friendly smile, board is completely empty white (for text overlay).
The board takes up about 40% of the composition area.
Centered composition, white space on sides.
Clean, functional, newsletter-ready design.
The teacher is presenting something with both arms,
both hands open and slightly extended downward and outward
as if saying “here it is” or “please look here”.
Gentle open gesture, not dramatic. Warm helpful expression.
Large white space below the character for content text.
Works as a section header illustration in newsletters.
Monochrome version. Black and white only.
Use only black outlines, white fills, and subtle gray fills where needed.
No color at all. Designed for black and white photocopier printing.
Maintain clear silhouette and readability when printed in grayscale.
The thick outline style should remain visible and clear at small sizes.
The teacher is making an OK gesture with one hand,
thumb and index finger forming a circle, other fingers raised.
Other arm relaxed at side. Confident and reassuring expression.
White space on the opposite side for text. Centered-left composition.
💡 DALL-E生成時の重要テクニック
1回で4〜6枚生成してベストを選ぶ。「Generate 4 variations」と追記するか、ChatGPTに「4枚作って」と指示する。
頭身・線の太さ・表情が崩れた場合は「same style but fix the proportion to 2.5 head ratio」と追記して再生成。
「NOT anime, NOT manga, NOT kawaii-extreme, realistic proportions for a simple flat illustration」を追加。
「pure white background only, no background elements, no scenery, isolated character」を強調して再生成。
「absolutely no eyelashes, no eye makeup, no lash lines」を追加する。
「muted, desaturated, dusty pastel colors only. No vivid or saturated colors」を追加。
🚀 量産ワークフロー（1日の動き）
