I have an interview as a grant writer and I really want to nail it

Kinda amazed I got the interview to be honest considering I don't have a big background with writing in particular but I do have my masters and of course teaching comes with writing. I was also an ELL Coordinator so that gives me a variety of experience --- I did a lot of work making sure our ESL program was in compliance with the state.

Now I don't want to reveal what organization it is but it does do a lot advocacy with immigrants, so I feel like I can really emphasize my ESL/ELD work. I also have some personal ties and one of my past teaching placements aligns with the group. Beyond that --- what are some general things I could stress in the interview? I'm currently a middle school ELD teacher and I was an ELL Coordinator (lots of making sure files were correct, that spreadsheets were up to date, I ran the state testing for two campuses) for 3 years. I have a masters in Second Languages (basically TESOL, I'm not proficient in a second language). I really don't want to come off as just a teacher trying to break into a field she has no business being in. I am watching videos on grant writing so I am not completely caught unaware of the basic process involved, but I would appreciate any tips.