1. Save the Snapchat sticker pack of your choice to your device's Camera Roll
2. Open Snapchat Memories and select Camera Roll
3. Press and hold the sticker pack you saved, and select Edit Photo
4. Select the Scissors tool and follow the on-screen instruction to create a sticker
5. Repeat this step until all of the stickers are saved
6. Once finished, exit and press "Discard Changes"
7. To use a sticker, take a snap, then open the Stickers menu and select one