Visualization, anxiety and nervousness

The Speech Buddy videos were short. It's hard for me to get a lot of detail out of such a short presentation. The videos talk a lot about techniques to address anxiety. These techniques involved breathing exercises. I've never thought that a breathing exercise could help me out with my anxiety with public speaking but I'll try it. The demonstration was helpful but I have tried it and it did not seem to work. I'll keep trying and hope I can get it right. The other video about nervousness had some suggestions that I don't think are very practical except one. Visiting the location before seemed difficult to make happen just because that requires a little more planning than I typically have time for. however, the suggestion that you "don't comment on your nervousness during your speech" is good. I've seen that and it's not a good idea. Later, the video suggests "choosing a topic that interests you". This seems to make sense since talking about something you don't care about would be difficult to really get into. The last video, the introduction of Jessica, was just  good to watch. She was so smooth and and great eye contact. She almost never read her speech. She just looked up and spoke to the audience. That is the part that is difficult for me. I hope I can somehow work my way towards that type of speaking ability.