Hi, welcome to Dreamviews and congratulations on your first lucid! It's definitely an amazing experience which everyone should experience at least once. As for how it happened, you're definitely doing it right, so keep up what you're currently doing. Practice being aware and question if you're awake, and do a few reality checks here and there to make sure you're not dreaming.

If you have any questions about techniques or other aspects of LDing, feel free to ask me or another Dream Guide.