Theme elements： The main visual element is still the bright full moon，But the design can emphasize the mystery and solemnity of the moon，To highlight the atmosphere of the Mid-Autumn Festival。 Some traditional Mid-Autumn Festival elements can be added around the moon，Such as sweet-scented osmanthus、rabbit、Mooncakes, etc，To enhance the character and atmosphere of the festival。 background design： The background of the poster is dominated by a lake，The moon is reflected on the surface of the lake，Creates a beautiful night view，Highlight the characteristics of the Mid-Autumn Festival。 The lake is crystal clear，Reflecting the stars in the sky，Create a quiet and peaceful atmosphere，Make people feel the mystery and warmth of the festival。 Color selection： The moon can be gold or silver white，Lake water can be dark blue or dark green，contrast with moonlight，Enhance the festive atmosphere。 The color matching should maintain the overall sense of warmth and mystery，Don't be too flashy，To highlight the solemnity and connotation of the Mid-Autumn Festival。 Copywriting design： The copy of the poster should convey the Mid-Autumn Festival blessings and celebrations concisely and clearly，Such as "Mid-Autumn Festival"，Full Moon Reunion"、"Appreciate the moon with your family，Taste the taste of reunion" etc.。 The font and layout of the copy should be coordinated with the overall style of the poster，以Highlight the theme of the festival和氛围。 Typography and layout： The layout of the poster should be concise and clear，moon and lake as main elements，Should occupy the center of the poster，Highlight the theme of the festival。 Copy can be placed around the moon and lake，Don't stand out too much，To maintain the overall visual balance and clarity of the poster。

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