Yes, many think that branding is only important in fast food and retail operations, but it's extremely important to colleges that have to compete for student tuitions; and it's even gaining importance among high schools, and their surrounding communities, that are vying for prestige to boost neighborhood reputations/value. More successful high schools are now recruiting star athletes and students with high academic achievements, and the school's reputation can either help or hurt those efforts.
Into making your own party invitations? Find some Cinderella castle clipart and print those pictures out. Color them in and paste them onto construction paper cards. The Cinderella castle clipart can be found free online and all you have to do is print it, color it and glue it to make your very own birthday invitation. Fill in the party date, time and place...and of course, mark down the reason...you've just made a unique party invitation. Make sure to make an extra one for your little girls scrapbook!
Some designers actually make their available online in its original format, so that you can download it and make some changes, as well as resize it, though most will only supply a high resolution version that can be used up to a certain size poster. A Google search for.svg clip art will give you vector art you can use in Inkscape, and in fact some of it is exceptional.