i'm sorry.
at first view i thought this is a toppick, worth a 10 voting.
but, at second sight i realized several perspective/shadowing "errors".
i think i know what you tried to avoid, and i think you did these "errors" on purpose, but i really think people would understand the glyphs even if it was straight...

i hope you get the point, even though my english seems not sooo good :P