Have the racket head *above* the ball before contact, then, as you slice down and forward, *don't* let the racket face "close" - which, if you opened it a good bit for power on the back swing, can get to be kind of interesting. Might even think of it as making contact "above the ball's equator". This keeps it from "floating" higher than you want.
Much like a high backhand volley, you may have to either just "stop" the racket face at impact, or really do some fancy racket face manipulation after contact in order to keep the face from closing. If you *do* let the face close, then it was probably closing too much at impact, and it probably went into the bottom of the net.
Weed at 156 newtons of tension(35lb force), 15 gauge, $16 per reel nylon.
Ace, XL TekZone wrist brace, no palm metal , golf rain glove for sweat