i think its easier to do with a thick silicone case like the speck case that looks like a grenade but this has a double layer whereas anything raising up or fitment wont be an issue when you put the charm rope thing on.
basically a large safety pin heated up tap it or poke thru the area you would like to put the charm at. i chose the corner area where most phones have the loop area. plus it doesnt get in the way when youre taking a pic or anything like that. its easy process but tedious.
ill try it on another type of case cause not everyone will get a switcheasy case. ill have pix up later of the area real close.
burned around the holes so its cleaner and not rough or sharp to where itll possibly cut the rope unless its metal wire.
until i can whip out the dslr heres some iphone pix.......
oh yeah the cases i found that had "holes" or whatevs for charms and whatevs were in the middle like part of the belt clip thing or yeah was awkwardly placed. im still searching for iphone cases with holes for charms and wrist straps and stuff. still no dice.