I'd recommend getting a writing coach. I also grew up in Southeast Asia and only started to speak and write in English as an adult. There are a number of major

I'd recommend getting a writing coach. I also grew up in Southeast Asia and only started to speak and write in English as an adult. There are a number of major grammatical patterns that we tend to struggle with, since our languages are quite far removed from English, historically and culturally. For me it took a few highly-educated native speakers pointing them out in my own writing to truly understand many subtle rules and I'm still trying to internalize them. If any native speakers would like to help their fellow HNer, I still welcome non-native error/style detection with sincere appreciation. ;)