try finding a spot that has a gentle slope, practice rolling tricks towards the downhill section, so you wouldn't scrub too much speed off and lose your balance.
it's mostly about finding a "sweet spot" in terms of rolling speed and balance; and fighting the fear of not having control over the bike by not scuffing/ having your foot on the tire and resisting the urge to tap the brakes, especially if you still have simple green cleaned chrome rims and soft brake pads.
the easiest rolling trick i can think of is axle wheelie/ dork wheelie, manuels and fork glides.