How to take photos of any of your Pokémon with GO Snapshot in Pokémon GO

Pokémon GO developer Niantic has released the following information to teach players how to use the new GO Snapshot feature:

Taking Photos with GO Snapshot

With GO Snapshot, you’ll be able to select any Pokémon in your Pokémon bag to pose and take a picture of it with your camera.

How to use GO Snapshot

1. Tap on the Pokémon you want to take an GO Snapshot of in your Pokémon Storage.
2. Tap the camera icon in the upper-right corner.
3. If you are not using AR+, then your Pokémon will already be placed for you.
4. If you are using AR+, slowly pan your camera over a flat, open surface (like the ground or a tabletop). A shimmery effect with yellow footsteps will appear once your device has detected your environment.
5. Tap on the shimmery effect to place your Pokémon on the flat surface.
6. You can move around to find the best angles for your shot. Tap your Pokémon and it will strike a pose. You can also brush your Pokémon to get its attention.
7. Once ready, tap the camera icon to take your GO Snapshot. You can take multiple shots and they are saved to your device’s memory.
8. When your photo shoot is over, tap the exit icon in the upper-left corner. You’ll then see a gallery of your photos from that photoshoot.

Source: Official Pokémon GO support page