First Photography Session

This is going to be my first photography "job" and I seriously don't know what to do, I'm fourteen and I will be taking pictures of my Uncle, Aunt, and their two children.

I have no idea what the area we'll be at looks like, I obviously can't get up and go drive to it, I'm only fourteen! I'm glad they trust me, but I'm nervous, I've never taken actual photos, I mean I have but they weren't planned out and it was just a family day at the beach type thing. I just took pictures of the children playing in the sand and water, nothing "professional"

Can someone possibly help, I have a Nikon d5100 that I recently bought over the summer hoping to do stuff like this for the family, but I really wished that my family went out first so I knew it was okay if I messed up(if you know what I mean)

I'm worried the most about positions;
Do I tell them how to sit?
What if they're not sitting correctly?
Do I touch them and make it correct? (it's kind of awkward)
How do I position them?
What positions?
Standing, sitting?
ect, ect, ect…

I'm also worried about how the area looks, the only thing I know about this place, is that they've got this small little chapel across the street.

If anyone could help and tell me what you do at a photo shoot.
What it's like to be a photographer.

Photography is what I want to do when I get older,
but I don't think I'm ready. I'd much rather like to have had practice first.

The only I could really do now is show the chapel, which is this;

credit goes to the photographer.

The chapel is beautiful, or at least a half of it. It makes me remind some of the Walker Evans' photographs. That's the first thing you must achieve, frame completely not just a half of the family. You can make them sit there, where the couple is, and take some photographs of them with the whole chapel (you will need to set your zoom to wide lens, if you use a zoom) and after take some other photographs just with them and the door. And, why not? Take some of them in black and white

Just do it, I say. Worry about the technical stuff later. Put it on AUTO and let 'er rip. Even a room full of doctors, lawyers or even heads of state, will listen to a single photographer when it comes time for a shoot. Just be confident. I'm sure your Aunt and Uncle will understand.

Search the 'net for posing tips and practice at home with friends or family. Think of this as a crash course.

And relax. This can be both educational and fun.