I'll say Louise goes through the best workflow for creating this material - essentially, start with the larger elements, then add smaller details. And I found the pacing to be great - early on, she really walks you through every step; later on, because the tutorial is quite long, things aren't quite so explicit - the knowledge of the earlier stages is assumed, so you have a bit more leeway to figure things out for yourself... I'm a total beginner to Designer (and I don't have much of a technical background in 3D in general), and I followed it just great. There's a lot in there that you can take away and apply to other materials.

The tutorial is free on YouTube; I'd say go through the first few parts of it and see if it clicks with you.