3. When you click on the sticker menu icon you should see all your sticker apps that you've downloaded there, you may need to swipe right until you see the "She Life" sticker icon, once you see it click on that and they should load into the app screen where you can either click on them to send as a text message or click and hold to place them within the text message area.
Here is a link to a quick little video so you can see exactly how to insert them and have fun with the stickers!
https://youtu.be/8PoOxkT3hM8