None of your pictures come close to being correctly exposed. They look like they're all under exposed. Pictures 1,2, & 4 have no central theme/subject, thus are poorly composed. Picture # 3 at least has a river running through it, which is your best composed picture, but again, your exposure is so far off, it's really hard to really CC.
May I suggest that you post these pictures or your next set in the Beginner's Forum. You'll get more CC's there, and positive direction on proper exposures and composition.