Giovanni
Lots of ways of going about this but the key is to make it personal and something you would naturally say/in your style.
A few points that you might want to consider (where I mention jokes/embarassing stories these are all light hearted anecdotes etc. nothing too aargh!)
- Welcome everyone to the wedding "what a fantastic day"
- Daughter is beautiful and you are proud parents (always nice to include something gushing about the mother of the bride at this point - unless you want a thick ear later!!)
- Insert a couple of stories of daughter when she was growing up (one could be something funny/embarassing for her and the other more sentimental/emotional for you as a proud father)
- Include a recollection of first meeting son-in-law? Something light hearted
- XXX is a fantastic person and welcome him to the family (the old saying of not losing a daughter but gaining a son!)
- Perhaps include a joke about him looking the smartest you've seen him or give him a couple of tips about keeping your daughter happy
- Do you know the in-laws well? Mention them too if it feels right - they don't get a speech so always nice to acknowledge them too.
- Propose a toast to the happy couple
There are lots of one liners etc. on google - find the ones that make you small and feel natural
As Brian says, number the cards and it does help to write on the cards "PAUSE" or "BREATH" as you can forget and try and deliver the speech in 30 seconds in one breath if you are not careful
edit: Here's a link that may help
http://www.hitched.co.uk/wedding-sp...room_speeches_3/keith_2656.htm?selection=Best
http://www.hitched.co.uk/wedding-speeches/example_father-of-the-bride_speeches_3/
Good luck!
