No, your English accent doesn’t really matter when you’re speaking in English.
What matters is how you can express yourself in English clearly and naturally.
See, most people misunderstand what an accent actually is. They have this thought that learning a native speaker accent will magically make them sound natural in English… it won’t.
Japanese, for example, has a lot of different accents. English accents are more so, you have British English, American English, Australian English, and more. In fact, in the UK alone, you have around 46 main English accent types. And this just means that you’re always going to encounter different types of accents.
But those accents (no matter how many and confusing) won’t really matter. Instead, focus on how you can express yourself well in English. In fact, if you want to start learning how to sound like a native English speaker, I can help you.
Hope that helps.
Dr Julian Northbrook