This is one of the tool I really love in the Loopcloud application, you can create and reshape a sample with the pattern mode, and it just doesn't leave you hanging with the customization, it comes with a lots of preset suited for different sound source such as Basses, Chord and Stabs, Hats & Shakers, Kick and more.
I'll be showing you how to get started with the pattern by using a preset, and how to save a pattern