Keeping the hero image copy consistent with the subject line & preview text may improve conversion rates since readers are likely to react positively to the same elements that they previously reacted positively to.
You can start the 'discount ladder' in this email and begin offering gradually increasing coupon codes. Just be careful to avoid creating an environment where discounts are redeemed on most orders (unless you've tested and proven that such a system works for your business, of course).
Template provided by Dorian Barker. Find him on LinkedIn: https://www.linkedin.com/in/dorian-barker-420832156