This video from Rome of everyone’s favourite bearded hippy dude, LNP doing front lips from a ton of different angles isn’t a trick tip as such as their aren’t actually any ‘tips’ to be heard of here. It does still give you a pretty good idea of how to do front lips though – observational learning and all that.
This trick can only really be called a ‘lipslide’ when the rider lands square between the feet. If he lands with the rail under his back foot, the trick becomes a frontside tailslide and if under the front foot, a frontside noseblunt, although many less pedantic observers will just call all three versions front lips anyway, c’est la vie eh?