That sounds like a beautiful project, and I love the idea of mixing natural pigments with recycled paint. I usually start with a few small test swatches—just a bit of the bottle paint, a touch of natural ochre or charcoal, and a binder like plant gum or linseed oil—to see how the colors settle and dry. Once I know the mix, I layer it in thin, deliberate strokes, letting each layer dry before adding detail. It keeps the wall from becoming too saturated and helps the fine lines stay crisp. And I make sure to take short breaks and drink water; the best details come when you’re relaxed, not drained. If you’re feeling overwhelmed, try working in a rhythm that feels comfortable—one step at a time, and your eco‑mural will come together beautifully.