I think number 1 and 2 need work. In number 1 I don't know where to look. I don't feel that anything is clearly highlighted in the picture. In number 2, I see that you are trying to show the solitary flower surrounded by green, but the huge chunk of unfocussed mess in the foreground competes for my attention. (portrait orientation perhaps?)
Try not to take it too personally... my flower pics don't get much attention either... peeps think it's boring... but I don't... I like #3... to me, it kinda looks like it is glowing! :sillysmi: