Deadline day turned out to be a quiet one at Molineux as expected, with Brazilian striker Jose their only signing of the month.
And Nuno, whose side are looking to end an eight-game winless run in the Premier League against Arsenal, said: "I think we have dealt well as a club.
"I think we took the decisions, we thought about those decisions and how they would impact the squad.
"It's a tough period to operate in, but I think as a club we deal with that well.
"The arriving of Willian gave us a very good option, an area that we truly needed.
"But more than that is raising the standards. Improving our players is what we have to focus on now."
Wolves' only dealings on the final day of the window were outgoings – forgotten man Roderick Miranda having his contract terminated by mutual consent.
For Nuno, the focus is on getting his squad back performing as they currently sit 14th in the top flight, in danger of being sucked into a relegation fight if results do not improve quickly.
On if his senior players need to step up to the plate, he said: "It's time to analyse and recognise which players are the best to face each and every game.
"We're playing games in a few days, so it requires management and the fitness aspects with all the issues we have.
"It's not about the senior players, it's about players who can deliver and do their tasks in the best way."
Nuno, meanwhile, has revealed Jonny Castro Otto still is on track to return soon, having gone over to Spain and had positive feedback from the specialist who oversaw his knee surgery last summer.
The Spanish wing-back is now training with the squad at Compton, although he will not be available for the visit of Arsenal – Romain Saiss, Fernando Marcal and Rayan Ait-Nouri also not ready to face the Gunners.
"Yes, he went to Spain and saw the specialist who did the operation," added Nuno.
"All the signs are good. He has rejoined us and trained the last couple of days.
"He is getting closer. He's getting better.
“I cannot say a date. He is working and still has some tests to do, some protocols to follow.
"But he is getting better, he is training and when the moment comes it will be very good for us."