Anyone have any good ways to shave from the outside of the neck towards the center on the neck - either straight across or on a downward diagonal ?

I'm sure there's a good way to do this, but I haven't found it...

I've tried using my right hand, and holding razor with the toe down about 30 degrees from horizontal, and sything from that 30 degree mark to a 45 to 60 degree mark. It works OK at the toe end (due to the greater horizontal travel of the toe), but I have to make several passes to get the valley alongside my trachea smooth, and this causes rash-like razor burn.

I tried using my left hand to shave the right side, but I can't quite reach, without turn my head to the left - which would cause me to need to shave the area by feel. This worries me, since the razor has to follow the contours of the trachea valley, and the stroke would have to stop before hitting the trachea at a very upright / cut prone angle. This worries me enough that I haven't tried it.

I can do an upwards diagonal on the right side using my left hand since I don't have to reach my hand as far to get to the upper corner (since the toe is now on that side). Unfortunately, the upwards diagonal is WTG, and doesn't get very smooth since the hairs lie along the skin and the muscle from the corner of the jaw to the bottom of the throat won't quite lie flat no matter how I turn my head, and I can't get the skin from the valley to a flat area no matter how I stretch the skin. (I'm sure the lack of smoothness WTG is not due to a sharpness issue, since this happens even with razors fresh from SRD.)

Anybody have a video of someone shaving from the outside towards the center of their neck ? I'm sure there's something simple I'm missing...

Thanks.