Tips and Tricks for Hidden Mysteries: Buckingham Palace ™

hi everyone,I just got this game a couple of hours ago.I am stuck at the arches and cant get any further.I have an X and a feather and I cant get out of that scene unless I do something (but what???) nothing goes purple like they say it does please help.

on the iphone l can not get the glue to come out and the jewell in still inside the geo is there a way speical way to get the jewell out and the glue