DS, you are doing it the right way for physical reasons, at least if you're running a square-taper crank. This is discussed a bit in one of Sheldon Brown's articles.

Torque from your right foot goes directly into the chainring, but not the crank spindle. Torque from your left foot goes into the spindle, then into the right crank and chainring. What this means is the square-taper joint on both ends of the spindle is normally stressed in the direction of the left side driving the right for half of the pedal cycle, and nearly unstressed for the other half. If the crank arms deform any from the load the deformation is always in the same direction.

When you level the pedals left-foot-forward, you torque the taper joints the same way as pedaling. When you level the pedals right-foot forward you reverse-torque the joints. That can make them displace "backwards" slightly. Then when you pedal again you force them back into normal position. This repeated movement can increase the deformation of the arms and make the displacement get worse over time.

Which is just to say that you should level the pedals left-foot-forward.