First of all, welcome to DreamViews.

Last night was your first attempt? Give it some time. Most people need to work on the techniques for at least a week or two before achieving any tangible results. Just keep at it, and have confidence that it will work.

Having said that, how is your dream recall? Do you keep a journal? If you don't have good recall, improving it is the first step to lucid dreaming, and a Dream Journal can be an invaluable tool to aid in this.