Hi,
I found a different way to achieve the handwriting / jitter effect:
1. create a textlayer (preferably using a handwriting font).
2. create a solid with fractal noise, I used standard settings, contrast 125, brightness 45, and a scaling of 55. (this may very with the size of your comp or text)
3. apply this expression to the evolution value: time*2500
4. Precompose the fractal noise layer
5. drop the “displacement map”- effect onto your textlayer
6. choose the fractal noise map as the displacement map layer
7. use luminance for vertical and horizontal displacement
8. play with the displacement values (I used “3”).
9. drop the “posterize time” effect onto the text layer
10. set it to around 8 frames to increase jittering.
voila!