after you got it from the store go to your bag and find it then click costumize
When they say "customize" in poptropica, they mean to wear it, not to decorate it. So you go to your items, the brown backpack in to top-left corner. then click the blue arrow. A list will pop up. At the top of the list, in yellow with a star next to it, there's "store items". You click that, and everything you bought from the store will pop up. You choose the costume you want, and click it! Click on the parts of the costume you want to wear, to put it on you. Click on yourself to remove it.
You go into your backpack. hit costumize or put on.
its the mask that you get all you do is just put it on
you don't inless you buy it
press the shirt on poptropica and then before u press on Mordred press the shirt and then u can put it on
you can't
you buy it first then you custimize the suit onto you then that's how you put it on
somewhere in the museum
You put the star fish on the offering table. You get the star fish from the museum its on Poseidon's face
Buy the alien costume. Then put it on and press the space bar to shoot. That is how you shoot the arrow too, when you get it.
on the island you go to your map then at the top at the screen youll see the name of the island ur on (ex. big nate, super power ecx.) then you click on it and the first one is purchesed items 1nce you've bought something you should see a star after it (purchesed items*) u click on it and you outfit will pop up click on it and press custommize :-D
Throw the star