wavy hair - poker straight ends

Hi there.....

i am wondering if anyone has any advice -

i have moderate to thick blonde hair which is naturally wavy - (not curly).  Just very soft waves when i let it air dry.  My hair is very long - to about the middle of my back - im always told by stylists i have "a lot of hair".  I usually flat iron it because the waves are subtle and i generally like the straight look - recently i was looking at the model Giselle's hair and i love it..loose healthy looking soft waves.. with bouncy looking ends....it sorta looks the way mine does - my problem is that no matter what i do, my ends are POKER straight and very blunt.  I have wave around my face and through the length but even if i scrunch the ends with my blowdryer on low they really never look good.  What can i do?  Does the Cut have anything to do with it?  Is it the texture? I can tell you this, when i blow my hair dry, before i flat iron it it looks like cotton candy - lol..... the names scarecrow and wild woman come to mind... lol.....i could never blow my hair dry and not heavily smooth it with a round brush or use a flat iron.... i'm so jealous of those women who can just leave it a little damp and have it looking fantastic.