IBAA Program 2027 Tips

To anyone studying IBA at JKU what’s the one thing I should work on to make it through the application video round as this year I applied and got rejected due to them facing difficulties to judge my English through the video ( I am an Indian applicant with B2 level of English ) and my video was very decent with different backgrounds. I am dedicated to applying at JKU and would like some tips to boost my application and make it past the video application round !
Thank you!!