Native English speaker looking to teach English to nonnative English speakers

I am a 22 year old student, currently studying a degree in Diagnostic Radiography. I have many friends who are nonnative English speakers therefore I know the common difficulties that come with learning English.
I intend to work with my students and organise lessons based on what students want to learn and what I think will benefit them when using English whether it is day-to-day or more formal interviews.
Grammar and vocabulary will be what is most focused on.