Got my interview letter

Looking for advice… I know to clean up (facial hair, haircut, fingernails clean, nice clothes, ect) I plan on wearing my work boots going to put mink oil on them to make them look nice(they aren’t beat up as they are brand new) I know that I am not going to answer questions with just yes or no and add on to my answers Also have 4 years of experience it’s all I’ve ever done and first thing I ever started to learn when I started working. It’s mostly mild sewer work and major commercial and residential septic installation/maintenance. just looking for extra tips TYIA