The lesson
For a seasonal push, put one bold headline card on a busy, crafted background so the message reads fast and the brand feels playful.
A pale card with dotted rules sits on a blue and cream pixel-wave pattern, with a pink knit scarf top right, a green birdhouse bottom left and a patterned cushion bottom right. The Shopify logo and "Start for free" top the card, above "‘TIS THE SEASON TO START SELLING" in large black caps and "Launch before Black Friday".
Don't copy the collage objects unless they fit your brand. Keep the contrast between one calm text block and a loud background.