After Phil pointed me in the direction of the Japanese artist, Ohara Koson, I managed to find quite a few lovely reference images by him:
I love the gentility in these images. The mix of pastel colours and warm light makes them feel not just gentle but nostalgic too. The flowers are incredibly delicate due to the thin lines representing the branches and the way the birds are just lightly perched on them makes them appear weightless also.
Everything looks soft and as if it would ripple as the air passes through it, which is something I would love to capture in my work!