So you're all setup with Untappd and you want to personalize it a bit with a profile picture - it's easy!
1. Navigate to your profile using the bottom nav bar, and select the "gear" icon in the upper right corner
2. Select "Account"
3. Select "Profile"
4. Select "Edit Photo"
5. Choose where you want to upload the picture from - either the Gallery/Photo Library or you can even take one right here!
6. There ya go! Now you have a profile picture uploaded to your account :)