well i tested compositing again!!!
here’s the image!! 
masking wasn’t too well done and a reverse image on the window would’ve done well…but sadly i couldn’t fix those.
no image of me from the other side and i didn’t notice the errors in the masking early enough 
oh well Enjoy!!
how do you mask things in the first place?
^ Yes I agree, Ditto
For masking you could do worse than check out Gottfried Hofmann’s hologram tutorial at BlenderDiplom http://bit.ly/A7zr6S
I used after effects…