:confused;

I have animated a line drawing in flash. The technique I used was by using
layers. The bottom layer is the final image that will be drawn out. I have
hidden the bottom final image by creating white lines on separate layers ove
r
it which gradually slide away as the animation progesses along the timeline.
 My
frustration is a technical one, even though the white lines which are on the
top layer and the stroke widths are slightly wider, I can still see some of 
the
lines of the drawing that are underneath. I can't work out why this happens.
Appreciate any ideas.

Have you tried using masks to reveal the drawing beneath? You're trying to r
ecreate the effect that they provide anyway.

Good luck!