About this template
A discount figure takes the upper half in the accent color, with "off everything" in heavy black capitals beneath it and a thick rule under that. One line of detail follows. The bottom fifth is a dark band with your logo, the dates in the accent color and the opening hours, plus a round badge that repeats the offer. A pale triangle in the top corner is the only decoration.
Writing the sentence for it
Start your sentence with the offer itself, "40% off" or "2 for 1". Short offers sit best in that big slot, three or four characters is the comfortable size. Then the dates, and which stores or which link. There's no photo, so the post works when the range is too mixed to show in one picture. Selling one product that looks good on camera? Tall Drop puts its photo up front.