I'm here mainly to contribute images of my own and improve categorization and connection to Wikidata. Although I sometimes upload images from other repositories with fitting licences as well (e.g. images from iNaturalist for species without images here) or pictures my late father took.
I don't see my job done, after I uploaded a picture. I always try to improve categorization, annotation and the images themselves. If you want me to improve the editing of an image, you can let me know.