Long Exposures/night shots

i'm not sure which to use for my long exposure night shot 8 x 10's.

I NEED YOUR HELP!!!

Film Photosnot.

Lex, and i thought it would be fun to go on a black and white photoshoot.

i'm getting more into overlapping photos.

this is something i put together from our gathering.

i'm not sure how i can get a transparent background (black) just becuase no matter what it'd just be white. and wouldnt match.

What do you think