1) you're focus isn't all that great here, it's focused on the stem when it should have been on the flower petals. Also the colour is fairly washed out, which i don't understand, unless you have over exposed the image.
2) i like this one, nicely composted and vivid.
3) Not very keen on the framing of this one. The either none of the object should have been cropped off at the bottom, or there should of been a clean crop right across the image so there was no table beneath the object on show in the image.
4) The left hand side is too heavily over exposed. If the focus of this image was supposed to be the boots then it's not worked because the white is washing them out. Also they are not in focus, the viewers eye is drawn towards the building and the grass beside the boots.
5) the whited out background kind of works here, although the focus of the image (the ball) isn't in focus, which is not what you want. Also the image looks washed out again.