Are you using a cell phone camera? Honestly, I see most photos are heavily weighted towards the red end of the color spectrum, nothing is clearly in focus, and there is a lot, I mean A LOT of noise in your photos. It almost seems like that 1.5 MP Olympus P&S I bought in 2002.
3 is composed nicely. It has potential, if not for the lack of focus and abundance of noise. Are you bumping up the ISO to compensate for lack of light? Personally I hate, hate HATE noise (just a personal preference) so I bring a tripod, or use other methods to ensure I can use as low an ISO as humanly possible.
Tree ones are not so great. Once again you have a problem with power lines. Learn to move your body to a better spot, to eliminate the power line. If you had walked up to the tree, or even cropped right between the pole and the tree and left the tree in the left third and open space (sun and sunset) in the right two thirds, would have been a great shot mate. (making sure NOT to include the power line)