Since you're SLICING, the ball cannot travel as fast as a topspin or flat shot.
So you aim lower, maybe 2' above the net cord, the ball lands deep past NML, skids off to one side, bouncing low, and hopefully gives your topspin grooved opponent some problems with setup and prep.
And since you are slicing, you have more control of the height over net, so you can adjust as needed if the opponent comes into net position.
Load your front foot, lean towards your target lowering your front shoulder, slice FIRMLY thru the stroke, with weight behind it.
I like a conti grip with a slight twist towards eFOREhand, taken well late, almost in line with my front shoulder.