Full book cover design

I am looking for someone to design a full book cover (front, spine and back) for my upcoming fantasy novel 'Salt and Blood' (or Salt & Blood if it works more aesthetically). I have tried to make my own designs on CANVA but they lack professionalism and as this will be an official launch I am looking for a creative take. I have included some images of book cover designs I really like, I would like red, black and white shades in the images. The book centres around the political climate between three islands, and how the lives of two sisters, primarily the younger, become entwined within them. I would like a cover that reflects the title, the concept of siblings and the ocean. Ideally I would like to see some examples of your previous work and if chosen please message me for the synopsis and blurb details, author name and subtitle.