How To Shift From A Local Audience To a Worldwide one?

I have been recently contacted by an influencer to make educational English content on a new fee-based platform. She has a million followers. Most of her audience is situated in Egypt and in Arab countries where English is not a native language. (I am an Egyptian who writes English books but English is my native language because I was raised abroad). However, they do understand English. I will create social media accounts and a blog soon (all in English) and I want to accept the job because it will potentially drive traffic to both platforms. However, I have seen that most Egyptians or Arabs who have local audience NEVER manage to transition to a worldwide audience, even though some speak in English (To be fair, they usually add in Arabic and country-specific references). My target audience was initially English native speakers, and from then move on to a worldwide audience. While having an Arab audience is not going to harm me in general, it might not be the good start for my follower base. However, I never saw anyone do what I do. Should I accept the job? I feel like I should, but how could I transition to a worldwide audience? Note that there is a downside. Those who will initially get to know me are beginners in English until the platform is more advanced and is tailored to advanced speakers, who could be able to read my blog and books.

Is this a smart move? Should I accept the job?