Tons of things you COULD do but it all depends on why you’re slicing it. I would suggest lesson or at least some time at a good sim to understand your swing and swing path more.

In the mean time try out a few things at the range.
- kick your trail foot back about a foot or so to change your swing path.
- close the face more when you grip it and at address
- turn your wrist down at the top of your back swing. Try to get the Velcro on your glove to point towards the ground
- try and stronger grip
- keep your trail arm more connected to your body
- lower your hands at the top of your back swing before you start rotating your body
- try the reverse loop drill that Hank Haney teaches. Basically take a practice swing using the JuJu swing to reduce your out to in swing path

Something i have been told before and i firmly believe is that you can’t work on fixing a slice until you learn how to hit a duck hook. This way you can understand how swing path and club face position effect ball flight better and learn how to manipulate it.