Smooth text mask effect - using maybe a motion path or something - leaving a trail

Hi all.

I can create a textural mask, whereby the serif text is gradually revealed. I achieve this by using the key frame technique, where I would add a few white areas, thus revealing the mask. So on play, the text is gradually revelled.

However there must be a better method for achieving this, a method that allows perfect smooth mask effect.

If done using my method. It can vary in speed depending upon the type of curve etc. I wish for the font to be made visible smoothly and elegantly. Can anyone advise on an alternative method, or am I stuck with what I know already.

I had thought of a motion path around the fancy text, and a ball following the path, but the problem I have there is that the ball would need to grow or leave a trail behind itself. If there was a way in which you could leave a trail of say a small ball, I am sure a perfect smooth effect could be achieved.

Please help anyone if you know the answer or have an idea that may be suitable.

Kind regards

Trevor Saint