New Home Button Attachment?

I followed this guide to replace the home button on my iPod Touch 5th Generation (no camera). Everything was fine disassembling it, but I am having trouble installing the new one. When I try to attach it to the front panel, it doesn't stay in place. What am I doing wrong?

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0