Could you tell me how I can say it seeing as though you are a native speaker?
Could you tell me how I can say it considering you are a native speaker?
ネイティブ native
だからこそ seeing as though/considering
できる how I can
言い方 say it
教えて tell me
「ネイティブだからこそできる言い方を教えて」というのは Could you tell me how I can say it seeing as though you are a native speaker か Could you tell me how I can say it considering you are a native speaker? で表現できます。
seeing as though ~ と considering ~ は(としたら)のような役割があって、「だからこそ」と相当する表現になります。