If you come into Caerleon over the bridge and along the High Street, you will pass the Roman Catholic Church on your right as you turn the corner - Ffwrwm Arts and Craft Centre is almost immediately on your left.
Parking: very nearby at The Olde Bull Inn or the Amphitheatre.
Walking: from the Amphitheatre walk down to the Museum and back along the High Street (it's one way). Go past The Old Bull Inn on your left and the Post Office on your right and you will see Ffwrwm's famous blue arch. It's less than 5 minutes.