Not sure what your camera can do, if it is point & shoot or dslr. I would've had a longer shutter speed on the last one to let in more light and brighten it up a bit. I like it like that too though haha
Edit: also the top third-ish is almost all grey clouds. I'm assuming further down was just dark trees though, so not bad with the scene you were given.
Also not trying to come off harsh or anything, just offering an opinion to try and help ya :shake: