Never bob or bounce while stretching.

I start all stretches easily, going to the point where I start to feel it pull. Then I very slowly, over the course of about 30 seconds, stetch more and more--never to the point of pain.

Then I move on to the next leg, or the next muscle.

Once I have gone through all my muscles, I repeat the sequence at least once. That way I give enough time between stretches of a given muscle, and I can always go a little further on the second or third repetition.

By the way, it took me about a month and a half to go from just touching my toes to the palms almost flat on the floor bit. I am still working to get them all the way flat. Be patient, you'll get there.

Cheers,
Jamie