Hey, I had the short flip hairdo, too!

It was very cute when I fixed it--I used a curling iron to make the ends flip out--but it looked like my dog's rear end when I did nothing to it. So the best advice I can give you is to either a) use a round brush to flip the ends out while blowdrying your hair, or, if you don't use a dryer, which I don't, you can b) spritz your hair with hairspray or spray gel and use the curling iron.
Now my hair is just long and layered...a little less stylish, but a lot less hassle!