Nature is one of those difficult subjects to make look more artsy, and this is why basic landscape photography is a pretty easy entry into nature photography. You can start big and get more detailed photos. It takes years to really understand that a subject like a tree or a flower (or a rock) can look more interesting than just what one sees through the lens of a camera. Yes, a basic photo of a tree is a great place to start, but to a trained photographer, it can be made into art!
Here is a good photo of a Norfolk pine in Wellington, New Zealand, I took in 2008. This would have been a reference photo (either for location or for species identification). In 2018, I may have taken this one, but definitely looked for a photo that was more abstract, and take that photo. (This one really is a nice shot, but it is a basic overall photo of the tree in it's surroundings.)
By contrast: on today's hike, we came upon this tree and I saw art right away, and took this photo. Someone new to this may have seen the interesting parts of the tree, but could they see the "art", as quickly as I did? Maybe, maybe not.
I guess that after more than 18 years of doing photography, both professionally (and making money) and as a hobbyist, I need to change my approach and grow again as a photographer.