You don't have any real black in the image, not even at the clear borders. That means your exposure time during printining was too short.
With my test strips I always determine the minmal time for maximal black. Correctly exposed negatives require a exposure time quite in the near of that. Overexposed negatives need longer times of course. Times much shorter are of less value.
The balance between black and white should be brougt out with the contrast of the paper.