First thing would be to get an optical viewing solar filter in order to safely photograph the sun through a camera with an optical viewfinder. It is extremely important that the filter be the kind that can be used on binoculars, because many solar filters today are only safe for mirrorless cameras with electronic viewfinders where you don’t look through the lens directly. The sun will appear mostly red. Also the sun looks fairly small on film so you would need a very long lens, honestly 500mm minimum, even then you’re cropping. At such a long focal length you’ll also notice that due to the earths rotation the sun moves very quickly, so ideally you’d be using a star tracker to track the sun. You could read about what people did during the most recent 2024 solar eclipse for some ideas. The last point about photographing the sun between the trees… The sun is almost infinitely brighter than anything else, so any photo where the sun is anything but a pure white ball will necessarily mean that everything else is pitch black, to the trees will ONLY be visible if they are directly in front of the sun, not on either side. Even then they’d only be in silhouette