I like that you caught the rainbow in the first one but I think it is overcooked and WAY over sharpened, I found myself staring at the top of it in the background trying to figure out what all those shapes were tone it down about 9 and a half notches and you will have a much better shot. 2 and 6 are well executed but cliche as well- great to practice with though. The panoramas are sort of boring and lack any real subject. 7 looks like a great shot but the angle doesn't add anything except dizziness. A straight angle is usually better unless you are trying to exemplify something.
5 is an all around good shot.