First of all, welcome to Dreamviews!

Your experience is pretty advanced for a first trial. The waves of energy are exactly what you feel through the process of having your body fall asleep. Your body slowly goes numb, and you start not feeling it anymore. This is close to a successful WILD, in which you can take advantage of your Body Paralysis to displace your dream body.

After your body becomes completely numb, you will be able to enter your dream. Attempt to visualise a scenario, and then step into it.
That transition is possible because, since your brain has no more sensorial input coming from your body, it tries to visualise what you are doing. You will be moving the mental image your have of your body, while your real body won't be moving at all. It is the best technique of entering a dream in my opinion.

I suggest you read the tutorials on the topic we have here at Dreamviews, if you haven't done it so far. If you have, then all I can say is good luck on your next WILD!