Minimalist Editorial Poster with Megaphone and Pushpin

minimal editorial paper collage poster on a clean white background, central dark navy torn-edge square note card rotated slightly clockwise, glossy red pushpin at the top edge, pale beige translucent tape strips behind the card at top-left and bottom center, rough ripped paper borders in deep navy blue along the top-left and bottom-right corners, halftone black-and-white megaphone cutouts with white paper outlines in the upper left and lower right, small yellow lightning bolts coming from the upper megaphone, yellow doodle arrow on the right and looping sound-wave doodles near the lower megaphone, layered handmade scrapbook textures, torn paper fibers, screenprint halftone dots, crisp graphic design, lots of negative space, modern social media announcement template, flat lay composition, high contrast, clean minimal layout