You'd benefit from learning more about cinematographic framing of actors, which is filled with suggestions about where is appropriate to cut off a body. Here's one starting point that looks helpful.
http://masteringfi...ition-a-breakdown/Of course it's best to take all shots as full shots so you can crop later.
My favourite shots are the three pop-up ones. The school bus one is the most striking to me, and the other two seem better framed in their settings. The compositions on the other two are less interesting. Also, is there a reason the pictures are so small?