Don't worry. I'm like you, too. I'm very twitchy with make-up, especially my eyes. You just have to keep practicing to get yourself to hold still enough to apply eyeliner/eyeshadow/mascara/etc.
From tutorials that I've read and used as guidelines, visual kei focuses mainly on the eyes. Pick your eyeshadow first. Apply that in whatever fashion that pleases you. Next, apply a thick layer/line of eyeliner to the top lid. For the bottom, start from the outside corner and go to the middle. This line won't be as thick. Add mascara thickly on the top lid and the outside corner of the bottom (or not at all on the bottom). Add any glitter or glue-on jewels as you see fit (maybe you won't want them...like me. I hate the feeling).
Oh, jeez. Before all of that, make sure your face is washed and clean. If you want, you can add foundation too, before starting. Best to use one that is a shade or two lighter than your normal skin tone (unless you are freakishly pale).
That's the best I can give you. I'll post some pictures of my exploits when I take them. Best of luck! We'll be learning together!