First off, hi!

I'm new here. I was planning on cosplaying human!Prismo next year at Katsucon and just wanted to know if I pass as a boy. Notice I didn't say man, because I'm only 5 foot even and I highly doubt anyone would mistake me for a full grown man, haha.
But here's me normally.
http://i49.tinypic.com/141njh4.jpg
And here's my mediocre attempt at being a guy.
http://i48.tinypic.com/fu020l.jpg
http://i49.tinypic.com/euq1xf.jpg
These are my girly clothes thrown together to make something at least a
little guyish looking. I didn't use any sort of makeup, so maybe that would help? Thanks for any input!