Make a Flour-paste crackle effect- Spread flour-water mixture over fabric, let dry. Crush to crackle it, then paint fabric. The dried flour mixture acts as a resist. Then washes out. This might work for a "batik" look, too! Use 1 cup flour with cup water
DIY Shibori Dyeing Tutorial from Design Sponge. Excellent tutorial with GIFs to show how to fold the fabric. “Shibori is a Japanese dyeing technique that typically involves folding, twisting or bunching cloth and binding it, then dyeing it in indigo.