To add stickers to your iMessages from Star Wars Sticker packs:
- Launch Messages and tap the "App Drawer" icon
- Tap the Sticker Pack icon you wish to use (These aren't Sticker Packs you're looking for?)
- Swipe left and right to browse through available stickers in the pack
- To add stickers to your conversation, tap to send automatically, or touch and drag the sticker to a reply or image in the message. In this conversation, an adventurous Kitty is sporting a Resistance Pilot helmet sticker.