Paint Tool Newby

Hi
I'm trying to conquer the paint tool and have a few questions about it.
Is it possible to connect a clone stroke to a tracker? I can't seem to order my nodes to get it working. I'd like my painted area to track to a hand and cover some effects makeup, then gradually reveal it.
Also I need to make adjustments to the stroke but can't work out which setting in the stroke controls would allow me to key frame changes. Or is there a better way to do this with the multi stoke tool?
Thank you in advance, I know these are likely easy things to solve once you know how!
Simon
I'm trying to conquer the paint tool and have a few questions about it.
Is it possible to connect a clone stroke to a tracker? I can't seem to order my nodes to get it working. I'd like my painted area to track to a hand and cover some effects makeup, then gradually reveal it.
Also I need to make adjustments to the stroke but can't work out which setting in the stroke controls would allow me to key frame changes. Or is there a better way to do this with the multi stoke tool?
Thank you in advance, I know these are likely easy things to solve once you know how!
Simon