My friend has a long narrow garden, at the rear of her early 19th century cottage.
She's made it seem bigger by cleverly staggering paving so that in some places it's just a path and in some it goes almost right up to the fence, with just a narrow bed on one side. The bigger beds alternate from side to side, so that there's one on the slightly shadey side and the one nearest the house and at the far end are sunny. This makes the "path" wind and the garden seems bigger
She also has a raised bed with an amelanchier tree, which the birds love, and honeysuckle which provides a nice food source for the birds, who use the trellis holding it up to perch on.
She has softened the edges where the plants meet the paving by using lots of ground cover plants (saxifrages, phlox subulatus etc) and letting it spread a bit. She has lots of cottagey plants (cosmos, catananche, nigella) that self seed year after year, some salvias and delphiniums for height, lavender for scent and pollinators, and has managed to grow a lovely climbing rose from a sucker that came through the fence!
I agree with pps that raised beds aren't really "cottagey". Ground cover might stop the dogs finding stones to carry around.
A slight word of caution about cherry trees: their pollen is a common allergen for hay fever sufferers, which is why I haven't got one. The streaming nose I get from NDNs ribes is bad enough!