George Byers impressed from the bench in Pompey’s midweek victory over Swindon.
The on-loan Swansea midfielder provided a fine pass for Ryan Williams, who was fouled to allow Ellis Harrison’s penalty to wrap up the points.
But he has yet to start a game since arriving from the Championship club towards the end of last month.
And Byers hopes his fruitful half-hour cameo will lead to more opportunities, with the Blues travelling to Crewe this weekend.
He said: “It was nice to have a longer time on the pitch to show what I can do and hopefully, with the games coming up, that can continue.
"I knew coming in here – with the side in the position that they were – it was always going to be tough to break straight in."
“I’m looking to really put my stamp on this team, but I knew coming in here – with the side in the position that they were – it was always going to be tough to break straight in.
“The boys have been playing really well, but I’ve been working hard on the training pitch and being patient.
“It was an important win for us on Tuesday, especially after only being able to draw the previous game.
“But it was one of the coldest matches I’ve played in – it took me about five minutes to properly get up to speed after coming on!”
After suffering successive defeats to Hull and Lincoln, Pompey have now collected seven points from the past three games.
Byers said: “It’s been a bit up and down of late – which happens during a season – and we’ve got to go on a big run now.
“This next stage of the campaign is going to be crucial if we want to achieve our end goal of promotion.”