Help With Dream Recall

[AirHead]

Hi, I'm new to this, just happened to stumble upon the website a few nights ago and decided it'd be fun to try. But, it seems that my dream recall is horrible, I'm waking up totally blank sometimes. Basically, this is how it went. Thursday night, I found this site. I decided that I'd start by trying to keep a dream journal and pay more attention to my own dreams upon waking. That night I was able to recall 4 distinct dreams just fine, the last one I happened to become lucid in (awesome moment, it just hit me that I'd been lying in my bed minutes ago and somehow I was now in a hallway; realized I was dreaming). It was a bit strange, in that dream everyone ignored me like I wasn't there (the 5 or so people I came across). I didn't do much exciting in it, but I walked around a little before waking up So yeah, that night was fine, and gave me incentive to keep it up. And yet, for the past two nights I haven't been able to remember a single dream. I've been setting an alarm to go off halfway through the night, aiming to record then, but my mind is totally blank then and later when I wake up at a normal time. I'm just looking for some direction, some tips that might help me actually remember my dreams when I wake up. Thanks. MORNING EDIT: And last night, same thing. When I woke up I could only faintly recall the following: "What are you doing here?" "I'm here to mock you." No visuals or context attached all. Could have something to do with the fact that I only got 3.5 hours of sleep last night though :/