I think I've got the paralysis part mostly down, but...

[Bulletinte]

Okay,

So when I'm practicing to AP, if it's quiet I usually get to the stage where I feel my body falling asleep and vibrations.  However, sometimes my body, like a part of my hand or foot will twitch almost reflexively, making it take a bit more focus to stay still. 

Even though I can get to the vibrations stage, I am having trouble getting out.  I've tried imagining lifting my arms up, gravity wells, the chain method.  What should I work on to finally get out?

[AstralJames]

Just keep practicing. You are doing everything fine. Maybe mess around with more variety of methods.

[Lionheart]

  What should I work on to finally get out?

Try getting in, instead of out.

Change your mindset, change your Reality.

Here is an EXCELLENT video that everyone that is serious about Non Physical Exploration, should watch.

http://www.youtube.com/watch?v=t_q5CDE2Nko

I just listened to it myself last night, for about the 20th time. I never get tired of it. 

[roman67]

Nice link Lionheart. You should watch the video. It is very helpful.