Non-Fiction Ebook Cover Design

I'm looking for a talented illustrator to create a ebook cover for my book. The book is a guide to a financial calculator. The cover needs to have a picture or exact illustration of the calculator. The target audience are students (economy/finance). Semi-minimalistic, colors perhaps in the blue-range or sand? I suggest perhaps using some mathematic formulas "muted" in the background (I can provide the formulas)

Requirements:
- Original, eye-catching illustrative design
- Ability to incorporate title and author name

Please provide a portfolio with relevant work. Looking forward to your bids!