what reference are you using? what kind of rock are you trying to make?
i think your previous attempt was more successful. you just need to keep working at it.
sketch the lines. get reference, see how rocks are formed, find your shapes. this is where your texture currently sits. i don't think the lines and cracks you have are working very well, though. they feel jagged and noisy and don't flow. no rhythm. try to avoid a lot of cracks that run counter to the rest of the rocks and end abruptly.
reference is key in this step. iteration should be fast. keep sketching until it feels 'right'.
define your large forms first. establish the rhythm of your texture. this can also be done incredibly quickly - in my paintover it took roughly 5 seconds and you can immediately tell where you're going with this. grab a light color, grab a dark color, and go nuts. blur your eyes, do the forms read? iterate on this until you're happy.
now it's all matter of pushing up your sleeves and painting. define the forms you just created. third step is vague and huge, but i believe in you!