The last four lines powerfully conclude this poem of vivid images and sentiments. Every word is essential, and you accomplish much with few words. The structure keeps the poem moving forward, drawing the reader along. Good job!
I'm at art college in Singapore.
"...I never heard them laugh. They had,
Instead, this tic of scratching quotes in air -
like frightened mimes inside their box of style,
that first class carriag.. more..