Hey there!
Due to the subject matter, the detail, and the references in the brief, I assume you’ll want a highly realistic and detailed style for this, yea? Anyway, my process would be to do this by hand then digitize it, I would first provide you with some rough sketches for you to approve of then commence in on the detailing and coloring - If you initiate the chat I can send you some *watermarked* samples not available in my profile
Anyway, I could start working on this right now, just let me know!
Cheers!
Don't forget to check out my profile for examples of my work and my feedback
https://www.freelancer.com/u/certaintly.html