Is it normal i am american born, but can fool people with false accents.

I am an American born and raised, never visited Europe, only ever left the states once on a cruise to the Caribbean. However I can speak nearly flawless accents in British, Australian, Scottish, and Irish, including a few variations. I've had no training by voice actor or trainer, just movies and TV shows. Doctor Who, Sherlock, Harry Potter etc. Really it just started as a habit when I was much younger reading Harry Potter, a habit which annoyed my family and friends but stuck with me throughout the years. I'm a timid person normally and tend not to speak well with other people. I used to stutter and pause alot mostly due to being an introvert, a timid personality but when I speak with an accent it flows more easily and apparently it's really convincing.

I've had a lot of Skype calls in the past year due to most of my friends being online and in odd parts of the world. I've fooled people who've lived in Europe their whole lives into thinking I'm from the UK. Frankly I didn't think that was possible. I never started it to imitate or poke fun at Europeans, really I just thought it sounded better when I read aloud to myself, but now, after realizing how convincing it is I kind of want to hone my skills.