I just had my 5th LD yesterday. It was my longest one yet; it was the first time I actually got to do something other than try to stop the dream from fading (and fail). It lasted a good long while. There’s one major problem, though: I barely remember the LD at all! Just about all I remember is waking up after it and being amazed that I finally had a good, long LD where I didn’t wake up immediately, and tried to think and recall the dream right then so I wouldn’t forget it, and went back to sleep. However, after I woke up later, the only memory of the LD itself I had was vague memories of flying and “doing stuff”.
Normally, my dream recall ranges from just OK to pretty good; in fact, on that same night I had two extremely vivid non-lucid dreams that I still remember well (one before the LD, and one after). However, it seems like whenever I have an LD, I have some sort of problem remembering it! In fact, in all of my previous 4 LDs, I’ve never been able to remember what caused me to become lucid; all I remember is actually BEING lucid. I wonder why, exactly, my dream recall seems to fail when I have an LD? Does anyone have, or has had, similar problems?
). What you can also try is to keep remembering yourself in the LD that you will be remembering all the details after waking up. Good luck 
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