PREPARE
Build a small, deliberate palette
Start with sounds you created or have permission to use. Pick one tonal sample and a few contrasting percussion sounds. Give the files descriptive names so you can recognize them when preparing your session.
Listen to each source on its own before importing it. A recording with a clear beginning and a useful decay makes it easier to judge whether the result fits your idea. This is a preparation suggestion, not a requirement to process every sound.