App not saving data

Hi all.

Im very new to this so after a bit of advice please.

I have created an app, which is essentially a custom top trumps idea, the user can load a photo, name it and set custom stats.

Im struggling to get it to save though. I want to have the photo saved along with the stats for that card, so that in another screen you could select it again. Is anyone able to break down the steps i need to take for this, or can i share my project so you can see what i have done wrong?

Thank you.