It’s like an intro, but for when you’re leaving 🙂
You’re all set. You’ve got a bucket-load of tools for improving how you deliver your presentations. All you need now is stage time to practice them and refine them. Try it out. There are a lot of organisations out there that need speakers.
Once you’ve found your feet, try Toastmasters. If you want to go pro, try the Professional Speaking Association (in the UK – there are equivalents all over the world)
Oh, and enjoy it!