Hey there!
My process would be to do this by hand, then digitize it, I'd provide you with sketches for approval, then commence with the detailing and coloring.
Relevant Skills and Experience
I'm an illustrator and artist who can work in many different styles, I do all my stuff by hand and it's all original - If you initiate the chat I can provide some samples
Proposed Milestones
$277 USD - create watercolor illustration
Could you provide some references to show what you'd like in terms of style and level of detail?