This is what I came up with. Instead of using watercolour, I decided to "paint" it with a photo editor. I didn't want the paper to buckle or warp and since there's a lot of colouring to do, I wanted to do it in less time. Also, I think the digital paint looks a bit more professional for this kind of illustration.
I plan to reprint this design for a planner "dashboard" and also, on various merchandise using Zazzle.