Don't be afraid to try something new. And if you don't like it, wait a year or so and try it again. Sometimes a technique is more advanced than we are ready for, but once we've got a little experience, our attitude changes. And don't be afraid to screw things up. Like several have said, it's only fabric; the stores will sell you more; and there's no shame in having one or more seam rippers. And have fun. This is supposed to be relaxing. If it stresses you out, it's not the right hobby for you.