Seriously, if you want any tips, I'm happy to share my experience. There were things that really helped. My absolute number one is to speak for something else a month or two prior to the wedding. I did a speech for work at an event in front of 40-50 people, I prepared the same way I wanted to prepare for the wedding and it went well. So, it reassured me that my preparations helped and that I CAN do it. I also learnt what my weaknesses were (rambling on too much), so I purposely structured my speech into small chapters of one story. The story was 4 minutes long, meaning I had 1 minute of rambling allowance. Good luck x