Newcastle striker reveals his goal after making loan switch
The teenager made his debut for loan club Gateshead this week.
McNall – whose father Keith played up front for the Tynesiders – came off the bench in Tuesday night's 1-1 National League draw against Woking at the International Stadium.
And the striker – who scored 28 goals in 36 games for United at youth level – is keen to get up and running.
Asked about his debut, McNall said: "Difficult. Obviously, Under-23 football's a lot different. It's a lot more physical (in the National League).
"I'm getting used to the surroundings and the physicality, and I think I should cope better in the weeks to come.
"I'm an out-and-out striker. I'd say main threat is when I'm in and around the box. I love scoring goals. That's what I thrive on.
"I've scored quite a few goals for the youth team, so hopefully I can take that into senior football."
Gateshead are managed by former Newcastle utility player Steve Watson, who made his senior debut aged 16.
"He knows what it's like to be a young player," said McNall.
"He was one of the youngest players ever to play for Newcastle. He'll help me a lot, and it'll be all good in my development."
McNall admits he has "big boots to fill" at Gateshead.
The 18-year-old said: "My dad used to play (for Gateshead) – he's tells me he's a club legend! When we heard about the offer, he said I had big boots to fill.
"I'm excited to be here, and I just want to get going and score a few goals."
Click on the video above for an interview with Lewis McNall courtesy of Gateshead FC