I'm looking for a crochet pattern, can you help?

I'm looking to crochet a baseball cap meets beret style hat but can't find any patterns. I've crocheted a few things before but nothing like this. If possible I'd like to find a "stove-pipe" style hat pattern(flat on top like a beret but with straight sides, not angled) that has a brim or bill on the front, maybe not quite as long as a baseball hat bill but in that style. Does anyone have a pattern(with pictures if possible) they'd like to share with me or know where I can find one? Any help is much appreciated.