If it's an all-over random-ish pattern, than that's no different to using plain fabric.
You need to decide what size you are using, then see which lines on the pattern correspond to that size, then cut along them. There are those who trace the pattern onto paper then cut that out, but personally, I've never done that in my life. I handle pattern pieces carefully and have used the same ones over and over again.
Good luck, and I'm sure there will be others along as well to help
Edit: Just seen your edit, that fabric looks lovely