Jamal Lowe is hoping to hit the goal trail and help Pompey continue climbing the League One standings.
He has netted four times this season, but has not found the target since bagging a brace against Fleetwood in mid-September.
The Blues have relied on the firepower of Brett Pitman this term, with the skipper already recording an impressive tally of 12 goals.
That has come despite two spells on the sidelines and Lowe knows that other players need to take the pressure off.
The winger said: “There has been a little drought, which is frustrating, but I’ll keep going and hopefully just one will get them flowing again.
“It’s a case of shoot on sight for me because you have to feel confident when you get the ball in front of goal.
"We need contributions from elsewhere – and hopefully that’s what I’ll be able to provide."
“Even having a gone a few games without scoring, I know that if the right chance comes along, I’ll be able to stick it away.
“Obviously we’ve got Brett, who’s got a silly number of goals already this season, but other players do need to start chipping in.
“He’s just coming back from injury, so we need contributions from elsewhere – and hopefully that’s what I’ll be able to provide.”
Lowe will hope to find the target when Pompey face sixth-placed Charlton at The Valley this weekend.
He said: “They’re a very strong side, with big players like Ricky Holmes, so I’m sure we’re going to have our work cut out.
“But it’s something we’ve been preparing for all week on the training pitch and I know we’ll be ready for the challenge.”
Lowe is currently getting used to being father for the first time, following the birth of his daughter back in October.
He said: “It’s been great really. Everyone keeps asking me what the hardest bit it is and it’s definitely those middle-of-the-night feeds!”