This is a drill for the perfect run up. It doesn't really matter if the point is slightly up or slightly down but it does matter if it is pointing sideways as this is likely to result in flight errors. The shoulder should be relaxed and you should aim to have good control over the point of the Javelin.
A common error is moving the point around whilst running up. If this happens then when you draw the Javelin back ready to throw it could end up pointing out to the left or right. The correct technique is to keep the shoulder relaxed and the point perfectly still as you run up.
We progress the drill to running and drawing the Javelin back. A common mistake at this stage is to lose point control, the Javelin points upwards because the arm drops. The result of this would be a very high throw, probably landing tail first or if the arm is low then the tip would go to the left and the tail would go to the right for a right handed thrower. This could also place excess strain on the elbow causing injury.
The correct technique would be a good start position, keeping the point still and Javelin right by the head.
This drill is made more challenging and progressed further by changing the foot pattern to a cross over. The same principles about keeping the point still apply.