Wimbledon was just the first stage of a three-part challenge for Pompey.
It was passed with flying colours, as goals from Brett Pitman and Conor Chaplin secured a first away victory of the season.
But Kenny Jackett wants the winning feeling to continue when he takes his side to Northampton on Tuesday evening.
And he believes that the travelling support – with well over 1,000 fans making the trip – have a big role to play at Sixfields Stadium.
The Blues boss said: “Hopefully we can take some confidence into the rest of the week because I look at this group of games as a whole.
“Northampton and Fleetwood this coming Saturday are two fixtures that I’m very much looking forward to.
"Both the players and supporters did well on Saturday and we’ll want them to do so again."
“When there are a lot of matches in a short space of time, then you want to attack it and get as many points as you can.
“Both the players and supporters did well on Saturday and we’ll want them to do so again on Tuesday night.
“We got a great backing at Wimbledon. That was to be expected, although I certainly don’t take it for granted.
“It drove the players on and helped us get a deserved victory, so hopefully it will be a similar story against Northampton.”
There was a recent change of manager at Sixfields Stadium, with Jimmy Floyd Hasselbaink replacing Justin Edinburgh.
And the Dutchman’s reign got off to the perfect start, with the Cobblers beating Doncaster to record their first points of the season.
Jackett said: “A new manager has come in and they got a great win at the weekend. They’re a tough side to play.
“We always respect the opposition and analyse them to try to work out their strengths and weaknesses.
“But the main thing is to get your own team sorted because it doesn’t matter how much research you do – if you don’t have good players, then you won’t win.”
Oliver Hawkins will not feature against Northampton following a nasty clash of heads with Dons left-back Callum Kennedy.
Jackett said: “He had half a dozen stitches and won’t be available on Tuesday, so we’ll have to see whether he makes the weekend.”