I totally understand it's difficult to read the tag-line, but kipe also said it was (i can't find it now but I thought I read...) %30 or %60 reduced lol.
The copy write info should be that small anyways, if it's an 8 1/2 x 11 ad, then you have to understand how a person views the ad. They aren't 6+ feet away from the ad when they read it like you would be in a class critique. I dunno about most people, but I tend to read a magazine at arm's length or shorter... You'll be able to read it perfect. The first tag-line still needs a change to a sentence and capitalized. No part of design is arbitrary. (Should never be rather). If you still haven't decided the way you plan on designing the tag-lines, then when you do, make sure they use the same design convention.
I find that a lot of beginner designers never think of how they're solution is to be viewed. For one, type and images need a hierarchy. Two, postcard text is going to be EXTREMELY small compared to poster text. A poster should be loud to draw a person in and viewable from a decent distance 6 - 10 feet. Whereas the postcard is going to be held away less than arm's length. Design is more complicated than it's given credit for, imho.