Brett Pitman believes a strong Pompey squad can climb the League One table.
The striker scored from the spot as the Blues recorded their first away win of the season with a 2-0 triumph at AFC Wimbledon.
Conor Chaplin then came off the bench after the break and immediately doubled the advantage to halt Dons hopes of a comeback.
And Pitman believes similar results will follow if a youthful side are given time to find their feet in League One.
Pompey’s skipper said: “It was a good win and we kept a clean sheet – you’ll always take that when you go away from home. We defended very well as a team and all worked hard.
“I want to score in every game I play. Realistically that’s not going to happen, but I know that my goals can help the team.
"If you look at the bench and even the players who didn’t travel, then you can see the depth we’ve got."
“We’ve got a strong squad. If you look at the bench and even the players who didn’t travel, then you can see the depth we’ve got.
“But it’s also a very young side with a new manager and lots of new players, so it will take a bit of time to get things right.
“If we can pick up wins along the way then we’ll be happy, so it’s important that we build on this result.
“It will be tough at Northampton on Tuesday, but there aren’t really any easy ones in this division.”
Fellow forward Oliver Hawkins did not emerge for the second half following a nasty clash of heads with Callum Kennedy just before the break.
Pitman said: “He’s a big lad and he’s there to win those flick-ons. He got another whack, but hopefully he’ll be okay.”