Prydie became Wales' youngest player and youngest try-scorer after making his international debut against Italy in 2010.
He went on to win four-caps but endured difficulties with injuries and loss of form at the Ospreys.
The 20-year-old has moved east from the Swansea-based region in the off-season and gave Dragons fans a taste of his capabilities with his starring performances at the Junior World Cup.
Now the Porthcawl-product is determined to kick-start his career at Rodney Parade.
"It was a massive honour to play for Wales and every player wants to play international rugby, but I know that I need to focus on the short term," said Prydie.
"Nobody here gets carried away, you just need to look at Dan Lydiate and Toby Faletau to see that.
"It has to be like that and my mind is totally on the Dragons. I'm making a new start here and I want to impress.
"I'm really enjoying it here and looking forward to a new challenge. I want to be playing regular rugby but I know that won't be easy because there is competition here.
"Full-back is my preferred position but there are plenty of players that will be going for that spot and the same goes for the wing.
"There's a great spirit here and the boys that have been here a while are saying it's been their toughest pre-season. We can't wait to start now."
Prydie's pin-point goal-kicking was a vital ingredient in Wales Under-20s success in South Africa, where they claimed a best ever third-place finish.
And he expects several teammates to take the next step into regional rugby and the RaboDirect PRO12.
"It was a great experience out in South Africa," added Prydie. "We played really well, enjoyed every minute and became a really close squad.
"Plenty of the boys showed what they can do and and will be wanting a chance to take that form into the new season with the regions. I think we have all put our hands up for selection, which I suppose is what that tournament is about."