Hi,
There's one simple task for reconizing whether you it was lucid dream or not?
'Ask yourself a question: Did i know in a dream that i'm dreaming?'
Imo that was probably a lucid dream, congrats

You figured out that your dreaming and said to yourself 'I'm dreaming'
Maybe you've got excited and dream collapsed?
Anyways there's one most important thingy 'You had a lucid dream.'
Now i belive you should give a try to stabilization techniques.
Lucid Dreams can end quite fast if we don't stabilize them or re-stabilize them if they become foggy, blurry or start to fade?
I suggest you reading this tutorial:
Dream Stabilization and Clarity Tutorial - Lucid Dreaming - Dream Views
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