Millwall manager Kenny Jackett wants his side to be more ruthless at both ends of the pitch.
The Lions have slipped to 14th in the Championship table after Saturday's 2-0 defeat at Ipswich.
"We probably had the better of things between the boxes, in terms of possession and passing," said Jackett.
"We played some quality balls into the goalscoring area, but it just didn't break for us.
"It's frustrating because there were a lot of good things in our performance. Between both boxes we were good but we need to combine that with being ruthless in the areas."