#8, I really like this one. Nice lighting.
#7, I would have cropped this with the flower more inside the image, or move it in more. Being cut off at the edge leaves it incomplete.
#3, Move the light up and to the right, putting the light itself at the intersection of the right and top 1/3 of the image. Using the clouds to fill the empty space on the left. Putting any kind of line right up the center, or across the center horizontally, actually makes the viewer subconciously uncomfortable by not giving them a main focus of the image.