Danny Welbeck admits it has been frustrating at times watching on at Arsenal, but he is now looking to kick on after seeing his patience rewarded with a two-goal showing against Brentford.Having failed to make a Premier League start this season, the England international has spent more time than he had hoped taking in the opening of a new era under Unai Emery from afar.He was, however, included in the Spaniard’s selection for a Carabao Cup third round clash at Emirates Stadium on Wednesday. Article continues below Editors’ Picks Man Utd ready to spend big on Sancho and Haaland in January Who is Marcus Thuram? Lilian’s son who is top of the Bundesliga with Borussia Monchengladbach Brazil, beware! Messi and Argentina out for revenge after Copa controversy Best player in MLS? Zlatan wasn’t even the best player in LA! That show of faith was rewarded with a match-winning brace, with Alexandre Lacazette grabbing a late third for the Gunners as they saw off London rivals Brentford 3-1.Quizzed by Sky Sports afterwards as to whether he has been frustrated stuck on the bench, Welbeck – who formed part of England’s World Cup squad over the summer – said: “Yeah, but you have to wait for your opportunity.“A few of the lads had a bit more of a pre-season than me, which made it a bit difficult. I came back a bit later than the others, but when I get the opportunity… I got 90 minutes last week [against Vorksla Poltava in the Europa League] and 90 minutes today so I’m just going to build on it from there and keep on improving.”Welbeck was also among the goals in his continental outing against Vorksla, proving that he can make an important contribution when called upon.He hopes there will be more opportunities to come, with Emery looking to build on the foundations put down by his Arsenal predecessor Arsene Wenger.“We want to impose our style on the game and we want to create chances that way,” said Welbeck“I think when we broke [against Brentford] it was very difficult for the other team to keep up with us. The more we can do that, the better. It’s nice to finish it off at the end.”Arsenal, who opened the season with back-to-back defeats in the Premier League, have now secured six successive victories across all competitions.Their next outing sees them welcome Watford to the Emirates on Saturday.