Step 1: 💧 Water and 💧 Water

Combine 💧 Water and 💧 Water to create 🌊 Lake

Step 2: 💧 Water and 🔥 Fire

Next, combine 💧 Water and 🔥 Fire to create 💨 Steam

Step 3: 💧 Water and 🌍 Earth

Then, combine 💧 Water and 🌍 Earth to create 🌱 Plant

Step 4: 🌍 Earth and 🌬️ Wind

Now, combine 🌍 Earth and 🌬️ Wind to create 🌫️ Dust

Step 5: 🌊 Lake and 🌊 Lake

And then, combine 🌊 Lake and 🌊 Lake to create 🌊 Ocean

Step 6: 🌱 Plant and 🌊 Lake

As next step, combine 🌱 Plant and 🌊 Lake to create 🌸 Lily

Step 7: 💨 Steam and 🔥 Fire

Combine 💨 Steam and 🔥 Fire to create 🚗 Engine

Step 8: 🌱 Plant and 🌱 Plant

Combine 🌱 Plant and 🌱 Plant to create 🌳 Tree

Step 9: 🌫️ Dust and 🌱 Plant

Combine 🌫️ Dust and 🌱 Plant to create 🌱 Pollen

Step 10: 💧 Water and 🌬️ Wind

Combine 💧 Water and 🌬️ Wind to create 🌊 Wave

Step 11: 🌸 Lily and 🌊 Ocean

Combine 🌸 Lily and 🌊 Ocean to create 🧜‍♀️ Mermaid

Step 12: 🚗 Engine and 🚗 Engine

Combine 🚗 Engine and 🚗 Engine to create 🚀 Rocket

Step 13: 🌱 Pollen and 🌳 Tree

Combine 🌱 Pollen and 🌳 Tree to create 🐝 Bee

Step 14: 🧜‍♀️ Mermaid and 🌊 Wave

Combine 🧜‍♀️ Mermaid and 🌊 Wave to create 🚨 Siren

Step 15: 🐝 Bee and 🚀 Rocket

Combine 🐝 Bee and 🚀 Rocket to create 🐝 Space Bee

Step 16: 🐝 Space Bee and 🚨 Siren

Combine 🐝 Space Bee and 🚨 Siren to create 👽 Space Siren