I think posing is all about confidence. On your wedding day you are going to look, and therefore feel, your very best. When it comes to poses I always try to pose someone in a way that flatters them- and often times this can be done by shooting from a side angle or a downward angle. As far as making someone look younger- there is a lot of magic that can be done in Photoshop during post processing that can take years off of someone.