My manga : Adamantine | Chronicles of the Waterless Realm

Adamantine - Chronicles of the Waterless Realm follows the adventures of the group of Squires - Zero, Romeo and Eileen - under the guidance of their master, the knight Arge. In the water-starved world of Splendore, they embark on a journey to deliver crucial information to connect people to the Capital of the Kingdom. As the Squires navigate through this harsm realm, they become intertwined with the quest of the elusive Graal, shaping their destinies and the fate of Splendore.
What do you think about the cover? I am hope to ear some advices to improve it. You will soon be able to read it in Webtoon.