Students who want to learn English often aspire to eventually having a "perfect" English accent rather than an accent from their first language. They believe that their English learning journey will not be finished until they sound like a native speaker.
It is understandable that a lot of people have this attitude, and there is nothing wrong with wanting to perfect a skill. As a matter of fact, I am always very impressed when I meet someone whose English is at such a high level that I mistook them for being English at the start of our conversation. I always reflect on what an incredible achievement this is.