public speaking jobs

How can I become more confident in public speaking?
For my work I often speak at events and conferences, what I like, but I am not very confident. I find that my mind goes much white. What can I do to be safer?
Look under "Presentations – How do I …" on the link below. It is an excellent resource for many things like that. I use it all the time for ideas. I know a web address its funny but I assure you its true ….
How To Get public speaking Jobs