I think you should practice this move, the approach the net whilst the ball is sitting on the tape and blow it over shot.
You should spend at least 5 minutes every week drilling this shot. With practice you should be able to control the ball placement post-blow - ie going directly behind the ball, but staying on your side of the net will blow the ball directly into the opponents court, but you could consider approaching the ball from one side and thus blowing it at an angle onto the other side, thus keeping it closer to the net and making the opponent move sideways to return the ball.
You might also consider increasing your lung capacity to ensure the blow is not weak and feeble.
Moving to the net to play this shot and then realising you havent got enough blow to get it over the net would be highly embarassing.
Those who say it is not equipment that makes the player, clearly do not understand the importance of the right sweat band