freestyle all mountain is where its at.
take your favorite lip, now try carving into it completely diagonal, get some air, land on your edge, ride away, noseroll to switch to engage your next turn.
Next run, hit the roll/lip with as much controlled speed as you can, but absorb the ENTIRE bump. DO NOT let your board leave the ground, maybe a big HUGE carve out toeside, and this time when your carving, try and arch your back a little to imagine taking a piss so you dont get any on your board. feel the spring and acceleration in your board.
Next run, after a big carve try and carve in a big circle up the mountain, just see how far you can get around nice and stable.
Its a big of a challenge to find new stuff to challenge yourself, but you will haha. Make it a game, and try the seemingly physically impossible carves and push your balance to a whole new level.