I remember that I had a short LD last night,it was completely dark(like closing the eyes),I urged myself that I could see but it was impossible, then I woke up… I thought (guess) that is my first “successful” LD but I am not sure, so what can I do next time?
Btw,or I was just awake? 
Congratulation! 
This has happened to me before. Remember that in the dream anything is possible. So let your imagination run wild. You could imagine that you have a blindfold on and remove it, feel around for a light switch, or simple command the dream to turn on the lights. 
You get the idea.
Yes. I had a dream like this and I just imagined that I was taking a blindfold off. Then I was in some clouds. 
Thanks! And now I am sure that I was dreaming at moment because I was walking in the darkness…I remember that I was failed to make myself see so I told myself to wake up…
Ps:RC when notice the word “dream” appear whenever i see it works?
RC-ing whenever you see the word, ‘dream’, honestly wouldn’t be so helpful. You should develop a habit of RCing whenever something strange occurs, also just RCing randomly throughout the day really increases your chances of doing it in the dream. Also it’s important the way you perform these RC, you must be conscious while doing it, otherwise you’ll be going about doing these in your dreams and not having them work correctly. You must actually question whether or not you are dreaming and perform your RC to determine if you are.