Great app for selfies!!!

I use an app called SCOS
(Spy Cam app)
You can set a ton of options and it will snap a pic every few seconds until you stop it. I usually set to 2 or 3 seconds, prop it up on something, then go pose in front of it. Lots of deleting required afterwards but there's usually some great shots remaining!
It's been removed from the Play store but you can still search and find it and download/install manually. Highly recommended!