Need some help - how does this pattern work?

Ignore this, I worked it out in the end lol.
I'm perplexed.

This is the shoulder pattern piece

these are the armholes (there's also the back piece that works into the armhole. but there's no markings on that!)

 which way do you think the sleeve goes? Longer piece to the back?

And then problem two.

 to the left, the right front side facing piece.
the longer piece is the left front side facing piece.
Above that is the back facing.
Im absolutely puzzled as to which way the front facing piece attaches onto the back facing.
Very angled, to the back facing, or slight angled to the back facing.