I have started three of her patterns. It is definitely a matter of just following her directions and doing things in order of how they are written. I have had the opportunity and pleasure of taking Judy's classes twice (one for Bali Wedding Star and one for Christmas Celebrations). She is a great teacher and gives great tips on how to handle her patterns.
Judy now has some videos on her website. My only reason for not finishing is getting sidetracked with other projects. I really do need to finish these wonderful patterns. I have one I need to finish for my Mom for her new place.
You sound as if you should have enough confidence to make this project. As far as colors go, you don't have to pick what Judy has used. Several of my classmates were making that quilt in entirely different fabrics that what were on the box.