As others have said, 1 week is way too short a time to be looking for LD results from the beginning. In fact, you're barely at the stage where LaBerge (the inventor of MILD and pioneer in the study of lucid dreaming) says you should even start trying. First you should work on your dream recall (dream journal) and your prospective memory. Which you're doing, so you're on the right track.

By far the best resource on MILD and LD in general is LaBerge's works: Exploring the World of Lucid Dreaming, and A Course In Lucid Dreaming. In ACILD LaBerge he gives explicit step-by-step exercises presented in an order leading up to your first MILDing (he also covers WILD but I prefer non-LaBerge resources for WILDing tutorials since LaBerge doesn't go in to sufficient detail IMO).
He covers: dream recall, identifying dream signs, prospective memory, relaxation, will, etc., and MILD itself.

Naiya's MILD tutorial is good too, I recommend it. But reading LaBerge you'll understand the point to all of these exdercises. His technique has been refined over teaching and improving the techniques to hundreds (thousands?) of people.

I myself started LD training 10 days ago, and just last night after a focused MILD attempt I got a non-lucid dream on the subject that I was visualizing -- a very vivid flying dream. In fact I had 3 awakening with 7 recalled dreams in one night, quite a bonanza, so I'm really psyched to stick with MILD. I had not visualized flying itself as a dreamsign, though, only as an action to take after becoming lucid another way! I've tried a few WILDs, it just mostly keeps me awake and makes me tired, I think it's a bit more advanced in terms of learning exactly how your body falls asleep. The beauty of DILD is that it doens't matter so much how you get to the dream, once you've "trained" and practiced enough, and your awareness is alerted to LD, you can have a very high LD frequency.