You can, if you like, boost the saturation a bit on cloudy, rainy days, since there's pretty low contrast on days like that. WIND blurring leaves can be an issue on days like that, so a tripod and slightly higher than normal ISO settings will help eliminate some of the slow-speed blurring that happens when you are in that 1/15 second at f/8 range.
WAITING until the wind dies down is often helpful. And again, camera support, like a tripod, monopod, railing, car roof + beanbag, or VR, something to help keep the camera and lens steady is helpful. There is no magic bullet. Using the longer zoom lens, you can probably pick out some small clusters of branches and leaves, and selectively focus on those using f/6.3 to f/8 and a telephoto setting, and showcasing those smaller aspects of fall.
You can also shoot upward, from underneath trees, and get some semi-transparent effects.