Dele insists Everton must continue to improve after the midfielder grabbed his first goals for the Blues in Sunday's 4-2 pre-season friendly win at Blackpool.
Dele slotted home two second-half efforts in an impressive display from Frank Lampard's side, with Vitalii Mykolenko and Tom Davies also on target.
But the 26-year-old called on his teammates to keep striving for more ahead of their final pre-season match of the summer against Dynamo Kiev at Goodison Park on Friday.
“We know what we need to improve on," Dele told evertontv.
“There’s some great coaching staff and players here. We all need to click and work together.
“Today was a good sign of that.”
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It was a quality display against the Seasiders, with two well-timed deliveries from Mykolenko and Nathan Patterson helping Dele achieve his first goals in Royal Blue.
The England international added he was happy to get on the scoresheet but was satisfied more with the quality of the team’s performance.
“I was kicking myself after the opportunity I had in the other game (against Minnesota United),” Dele added.
“It was a chance I should have taken and today was a chance to put that right.
“I got two goals so I’m happy.
“Overall, it was a good team performance and times like this, that’s what we’re looking for.
“It’s not about individual moments. It’s about how we’re improving, how we’re building as a team.
“I think today was a step in the right direction, but we need to keep going now.”
Dele was one of four changes made to the Everton line-up from the friendly against Minnesota and accepted no one can be complacent when it comes to pushing for a starting spot for the Premier League opener at home to Chelsea on Saturday 6 August.
“The manager doesn’t need to say too much,” he said.
“As players, we know of the quality that we have in the side.
“We all want the same thing. We have the same goals.
“To achieve anything, we need to be fighting for places.
“No one’s place is guaranteed. We have to work hard in every game and training session.
“Everything we do, we need to apply ourselves.
“When you’re at a club like Everton, it’s not for the manager to say that places are up for grabs.
“You have to know that and feel that whoever is in that starting 11, it’s not a guarantee [that you will keep your place].
“If you’re on the bench, you need to work hard to make sure you’re playing.
“I’m just working hard every day and making sure that I give my all for the Club when I’m on the pitch.”