Illustrate an Epic Fiction Book Cover

I'm seeking a talented illustrator to create a captivating book cover for my fiction novel. A saga with 5 books on it and with a narrative line designed.

The books goes through 5 elements: water, fire, win, earth and a fifth element call Eter.
Tentative colors for each element:
- Blue for water
- Red for fire
- Grey for win
- Brown for earth
- Purple for Eter

Requirements:
- Genre: Fiction
- Style: Illustrated
- Mood: Epic and adventurous

Ideal Skills and Experience:
- Strong portfolio in illustrated book covers
- Experience with epic/adventurous themes
- Ability to convey complex narratives through visuals
- Attention to detail and creativity

The books will be written in Spanish and I added a small document with the books displayed.

Please include samples of previous work in your bids.