Try resampling your line to create more points then run that through a noise deforming VOP, or VEX. Turn up the Roughness or Turbulence on the noise, also try raising the frequency as well.
Have you looked at the l-system crack preset?
Edited by Enivob - May 8, 2017 09:00:10
Using Houdini Indie 20.5 Windows 11 64GB Ryzen 16 core. nVidia 3060RTX 12BG RAM.