Promoting Fiverr gig with gig image

[wpressgurubd]

I have 3 gigs on my seller account. My gig's basic prices are $25, $15, and $80. Since I couldn't find the coupons option on my seller account's growth & marketing section, I decided to add three images promoting sales for $15, $10, and $35 to each of my gigs. These images will be provided as attachments. Does this break the rules and terms of Fiverr? Or can I do that?