1) pick an anime girl from Dreamwidth or Tumblr. (just search anime icons)
1a.) Use any song from Artzie Music, Majestic Casual, or Soundcloud. Make sure it's very poppy and something that sounds like it could come from Urban Outfitters.
1b.) Search "pastel background" in google and use any background that you find, but make sure it's girly. You may also use a single color background, but make sure it is warm and light colors
1c.) Have your bio be a sentimental quote, or a picture with no overbearing context beyond 'hey look here's a flower in my profile so im a girl'. My suggestion is to search "pixelated (object)" in google for the heightened effect.
2) if you're straight like me, let the guy know right away that watashi only interested in anime or other weeaboo merchandise, like figures. otherwise itll get too weird
3) when he asks to skype voice call, don't say your mic is broken. that's stupid. who doesn't have a mic? say that you're playing love live or watching anime
4) last step and only step you really have to follow: set your profile to female and just tell ppl ur a cute anime girl and they'll believe u. the fantasy of talking to an anime girl is too good that guys will just ignore their gut telling them that they're talking to a guy ^_^