The German-born striker calmly slotted home from close range to put the Blues level in Miami and admits it is great to get off the mark.
“I was so relieved because I should have scored the two chances before that in the first half, so it was good to get that one,” said Nmecha.
“The second chance hit the post, but I should have put it away. I try not to beat myself up about these things, but sometimes it does get to you. You just have to keep going.
“Chances will come and the more comfortable I get, the more I will score.”
Nmecha admits the fact that so many senior players have been absent due to World Cup duty has given younger players a chance to impress the boss – a chance they might not have otherwise had other than in training.
“We have been lucky in a way,” he said. “We have got so many great first team players and they've all been away at the World Cup, so we have had our chances to play and I thought we all did really well.
“It’s been an education working with Pep. It's mainly tactical stuff, movement-based - where to stand, where to be when we're building up and crossing. It has helped – I've learned a lot up to now and hopefully can keep on learning.
“I don't really know yet what’s going to happen this season. I'll have to speak with Pep and see what he wants me to do. I'll see what I'm doing and then set my goals.
“He demands hard work, and as long as you do that, he is happy.”
Nmecha admitted he had also taken advice from skipper Vincent Kompany about how he can improve his game and become a thorn in defenders’ sides in the coming seasons.
“Vincent Kompany has told me what he doesn't like playing against!” smiled Nmecha. “If I hold it up against him I might lose the battle, so it's more about running in behind and using my pace. It’s a learning curve but one I’m really enjoying.”