Francis Towne, British artist / art teacher, famous for Roman ruins between 1780-1781 in watercolor, trained in London as a coach painter in a 7 year apprenticeship. Miyazaki's Studio Ghibli backgrounds often look like Towne's art

He actually learned to paint flowers because coaches in those days were decorated with floral designs.

https://www.meer.com/en/18464-francis-townes-watercolours-of-rome

https://www.christies.com/features/why-francis-towne-is-having-a-moment-7482-1.aspx