Here is a website that offers free vintage patterns click on the choice for "hat patterns" I also receive their email newsletter (with no spam) they have lot's of choice. I think you'll enjoy their site, hopefully they have what you like.
I forgot to give you the website my bad http://www.purplekittyyarns.com/patterns/crochet.html
I couldn't see your picture, so I am not sure this fits your needs exactly, but the Crochet Me free eBook on hats has a great crochet beret pattern in it. Hope that helps!