Any TIPS for WEDDING PHOTOGRAPHS for a BEGINNER?

Sorry too much capitalization.

I own a Nikon D3300 and I'm supposed to be the photographer in a small wedding this upcoming weekend.

I know my camera isn't that great and I'm honestly sort of shy about taking it to the wedding. I'm also nervous about being the photographer, my skills aren't sharp, I barely know the basics. My cousin who has a great load of cameras and lenses will be there, he wasn't asked to take pictures so it makes me nervous that I won't be able to get the job done.

The wedding will be outdoors. Any tips on what highlights to photograph? Also any tips on aperture and iso will be highly appreciated. This is a bit too much pressure.

THANK YOU OH So MUCH IN ADVANCE. GOD BLESS YOUR HEART.

Read more: Any TIPS for WEDDING PHOTOGRAPHS for a BEGINNER?