Hi, all new to reason - just wanted to know the best process for a good dark DnB tune. Had a mess with various combinations but only managed a few nice riffs - how do i put it all together? and how do you do your own drum loops etc? thanks....

Doing own drum loops is always difficult for any type of music. There isn't really any process that can be explained there. You just need to experiment.

For basslines try layering multiple instruments together.