Congrats! I don't have much experience with WILDs so I'm always curious to hear everything about the exact process people go through from awake to lucid. Did your body feel like it was entering SP when you started visualizing your ceiling? How exactly did you enter the dream? Keep visualizing until it's clear? It sounded like you didn't really notice any transition aside from sight.  

very interesting. If you hear from the researcher please post it here and in the SSILD subreddit!