Sefa spoke to NRL.com at the official media launch of the World Cup at Old Trafford, where he says he's enjoying the entire experience.
"It's exciting to be here [at Old Trafford], obviously at Manchester United's home ground, and just to feel the vibe of all the other teams here at the World Cup," Paulo said.
The Tomahawks surprised the rugby league community last week when the minnows defeated France 22-18 in their World Cup trial match.
Paulo says the victory has excited the team heading into their first match against the Cook Islands.
"When I first came here my goal was to develop the younger players and give them an experience to make memories and have fun, but after the win over France, the morale of the team has lifted and we're all excited," he said.
"It's obviously the best victory we've had for the Tomahawks, but we're not going to get ahead of ourselves yet!"
With NRL players Clint Newton and Eddy Pettybourne also pulling on the Tomahawks jersey, Sefa says he's enjoying working with a mix of experience in the players.
"We've got a lot of American-based players and players playing in lower leagues than the NRL, but it was good to see the heart of the boys show [against France]," he said.
"Training is pretty simple - we're not trying to complicate our game plans, just trying to get the boys learning the basics, and it's a good opportunity for us to develop these players so when they go back to the USA they can develop rugby league there."
Sefa has named one player as one for the world to watch come kick off:
"We've got a young kid from Philadelphia named Michael Garvey - he started two years ago with us, was playing in a local league in the States and spent the lat two years at the Ipswich Jets," he said.
"He's come a long way and he's a great talent and centre and wing, and alongside Clint and Eddy, they'll probably give us some spark on the edges."
Click here to see our hub with all information from all Parramatta Eels players competing in the 2013 Rugby League World Cup.