「Dear little Theo, welcome to the world!」という見出しのサンタからの手紙で、ノースポールのレターヘッド付き。赤ちゃんの初めてのクリスマスのための、やわらかな水彩風の記念デザインです。青いセリフ体の文字と筆記体の結びの言葉がクリーム色の紙の細い青い枠の中に並び、片隅に青いリボンをつけたテディベアがいます。赤ちゃんの名前、メッセージ、結びの言葉を入れ替えて、あなただけのサンタの手紙を作れます。

Create a finished, print-ready Santa letter for a baby's first Christmas, portrait 3:4, with generous home-printer-safe margins. Use softly textured warm ivory stationery with a delicate pastel-blue border and faint handmade paper grain. Keep all lettering and important details comfortably inside the margins. Render ONLY these exact words, with spelling, punctuation, and casing preserved: “NORTH POLE” as a small, elegant letterhead; “Dear little Theo, welcome to the world!” as the large opening line; “I can't wait to visit you on your very first Christmas.” as the warm, readable body line, wrapping naturally onto a second line if needed; “Love, Santa.” as a separate closing and signature. Do not add any other words. Use a friendly, highly legible storybook serif with rounded forms, open counters, gentle stroke contrast, and soft ink-blue lettering. Give “Theo” a subtle emphasis through slightly heavier weight, without changing the text. Letterhead is smaller and refined; body is generous and clear; the sign-off is gently handwritten but unmistakably readable. Arrange it like a real keepsake letter: letterhead centered near the top, followed by a small hairline divider; opening and body aligned to a calm left margin in the upper-middle; closing below with comfortable breathing room. Place a tiny, sweet teddy bear illustration in the lower-right area, made of pale honey-beige watercolor with a pastel-blue ribbon. Add only a few tiny powder-blue and muted-gold stars around the outer edges, keeping them away from the words. Soft, diffuse light, delicate watercolor edges, quiet magical warmth, refined and uncluttered. The letter is the hero; decorations remain secondary. No extra Christmas motifs, no photorealistic characters, no logos, no extra lettering.