To edit your Loupe ID profile, click or tap the "Edit" button above the Loupe ID card:
You can also quickly edit your profile image by clicking on the + located above the image:
Once in the edit screen, you can change the variable portions of your Loupe ID profile, including your profile image, preferred Nickname, and the "My Collection" section of your profile.
Click "Change Photo" to update your profile image. Here, you can also enter a Nickname to be displayed on your profile, and enter your Top 3 PC items so that shops as well as other users know what you're currently collecting. You can also privatize your profile on this screen. Once you've made your preferred changes, simply tap "Save" when finished, and your Loupe ID profile will update!