Wales opened their RBS 6 Nations campaign with an impressive 23-10 over Scotland but Jones knows there are tougher games to come, starting in Dublin next Sunday.
"It's a difficult game next week," said Jones after a fine performance at the Millennium Stadium. "Ireland are a superb team at home and it's a tough test at Lansdowne Road - a great benchmark to see where we are."
Wales, maintaining the momentum from their run to the World Cup quarter-finals, threatened to overrun a mediocre Scottish side before a late rally from the visitors cut the deficit to 13 points.
The Welsh ripped their opponents apart with some dazzling running rugby that led to two tries for returning right wing Rhys Williams and a first for his country for prop Adam Jones.
It could have been more with flanker Martyn Williams stopped just short and left wing Shane Williams forced to put a foot in touch before grounding the ball. Full-back Gareth Thomas was also denied a try that would have equalled Ieuan Evans' Welsh record of 33 by a marginal obstruction decision.
"That would have been a great try if had been allowed," said Jones, enthusing about the confidence in the Welsh side which has grown from their efforts Down Under.
"Starting this Six Nations we were far happier with our plays than we were before the last one, basically because of how we came off the World Cup.
"Although we didn't eventually have too many successes what we did gain was the self-belief in the type of game we were trying to play."