Level designing for Black hole game

I’m building a “Black hole”-genre game in Unity and already have every 3D model, texture, material, and helper script prepared. Your job is to turn those assets into workable prefabs and then lay them out into 25 complete, playable levels... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, Game Asset Creation, Game Design, Game Development, Level Design, Unity 3D)