You may still want a small wire frame (bent up wire coat hanger ) in the wing straps would attatch to that. I do not suggest stringing any strap through the foam because it may rip. Safety pins might be ok.
... And to answer that question "Yes I live here and have nothing better to do "
Next Convention: Otakon
Current WIP - Child Luna / Luna Fan (sailor Moon ) *** Felicia (Darkstalkers) casual ? ***
Makoto - Street Fighter