Yes, I moved in St Lucia, a small Caribbean island (~620km) few years ago.
Openstreetmap already had a lot of information but nothing on the land use (forest, field …). So over almost a year I’ve worked on it to add all the forest using satellite imagery. Most of the community names were missing so I’ve also added around 100 names and plenty of roads and buildings.
I’ve also started to add all the rivers and stream using public data but this is still underway.