If that is where they are touching when the valve is closed, it looks OK, but what you really want to to is blacken the entire head of the valve, install the rocker, then rotate the crank so the rocker opens and then closes the valve.  The resulting clean area should span across the centerline of the valve, equal on both sides.  The roller tip moves across the valve as it opens and closes, rotating in an arc whose center is the fulcrum point of the rocker.

No, I am talking about the area on top of the valve stem.  If they are set up right, you could take your mark, draw a parallel mark throught the center of the valve stem, then another parallel line equidistant opposite the centerline.  When the valve is opened and closed the rocker roller would go from the line you have now to the line on the other side of the valve.  That would be perfect fit.  If you are close, you are ok.

Mochaman,
 If all you did was soak the valves in oil befor setting. You really need to go back and; release all valve rocker tension, pull the dizzy, use a 1/4 in socket on a 1/4 drive/10 in. extenstion.(tape it together if you don't feel it's secure enough) attach it to your electric drill. and fit the 1/4 in. socket onto the oil pump drive shaft (where the dizzy hooks onto it) Run the drill in reverse(counter clockwise) untill oil comes from the top of all the pushrods. This is pre-oiling the engine, necessary prior to setting the valves. Then you can go back and follow the procedure for setting the roller rockers. Hehheh, I usually have to go back and reset the valves at least three times after the engine runs. I always think the RR's are making odd noises. The dang things are noisy, even when they're set correctly.

Corky