Hey Nedim,
this depends on the multilingual plugin you are using; the general principle would be to have PHP a rule in the “header.php” template file that would display three kinds of images depending on the language setting of the current page. Such customizations are unfortunately out of the scope of the standard ThemeForest theme support offer; I can advise several freelancer services, such as Fiverr and Tweaky, which should be really helpful in such situations.
Sincerely,
Andrew / Satori Studio