T.S.
Mary... good for you for trying for one of the most natural processes in the world!
I went through natural child birth... that ended up in a c-section.... no fears please, there is a reason why. I'll tell you.
Basically my first suggestion. Stay at home as long as possible. Once you get to the hospital you are on "their" time clock... hence my c-section.
I would also fill your room with not only positive people but positive thoughts.
I was a huge fan of the birthing ball. My husband was a great coach... he literally talked me through the contractions. My advice here... focus on relaxing through the contractions... I can still here him say, "relax your shoulders, relax your arms, relax your back..." he would work his words all the way down to my toes and then the contraction would be done. While I relaxed each muscle in my body, I would breath slowly and deep.
You can totally do this... I am very excited for you!!!
Your body knows what to do... it is mind over matter.
And please also just be prepared that some times things are not always according to our plan. So be open if things need to change. :)