Que Sera! This is a blog for visual communication design field that maybe help you to get inspired. My name is Selin Dönmez and i am a senior VCD student.
Very nice - however, here are the problems: In the one in the middle the text area is much closer to the image, it should be consistent and like the others. In fact all of them can go a tiny bit lower. Second, the bottom margin is too tight - especially since you have these nice wide margins left and right. This doesn't have to be A3, you know? You can also have a custom size that is longer. Third, where is your logo?