When you enter the Peacekeepers World go to the part where there is enemies and kill them and then go to the cannon. You see a rock on a ledge with a bullseye target on it.
Light the cannon and hit the target on the rock. Jump on to the ledge where the rock was and turn right and jump on to another ledge.
You will see an enemy, kill him and then get the gems. You will see a portal that will lead to Crystal Flight where you can learn to fly.
More tricks, tips and cheats for this game are right here - Spyro the Dragon cheats
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