Hi, welcome to DV and congratulations on your first lucid dream!
Also, well done for starting a dream journal as that is the single most important thing you can do in beginning to learn lucid dreaming.
Have you checked out the tutorial section?
There's lots of good tips and techniques for inducing lucidity, and i think theres one for improving recall as well.
Hope you enjoy your time here, and feel free to PM me if you have any questions