You are understandably excited, and that is the issue. No matter what technique you use, if you really are afraid of having trouble sleeping, or if you believe you will have trouble, then you usually will. It is tricky, but you must try to convince yourself of the opposite. Regardless however, if you practice awareness for a least some portion of the day and think about lucid dreaming, it is bound to happen eventually, and once it happens the first time, the lucid dreaming techniques will probably make more sense and seem more real.

Try to relax and believe that you will succeed, even if it takes a few weeks. For now try to focus on lucid dreaming during the day, but when you go to sleep, try not to think about it at all if possible, or try not to care, at least until you are better able to sleep while doing so. This can be done but it takes practice. The ability to direct your mind is probably the best tool that you can cultivate for lucid dreaming regardless.

As a last resort, you might want to try some isochronic tones to help you sleep. I don't know much about this though, and using an aid may not be the best idea.