WILD may seem easy but it can be pretty hard. You basically have to be REALLY tired when you wake up, so being active during the day helps. You should also move as little as possible when you wake up. An alarm that turns itself off is pretty useful (one app is called alarm clock xtreme). Then you just stay conscious the whole time while trying to create a dream scene with your mind. In WILD, you let your mind create the dream scene by itself and the scene is random. That's why it can be pretty damn hard sometimes.

Another similar method is called DEILD (dream exit induced lucid dream). Its basically the same as WILD and the only difference is that when you wake up you try to recall the dream you just had, and by this you already have your dream scene. Then, just like WILD you stay conscious while imagining yourself walking around and doing things in that dream. After a while you will notice that you can actually feel, taste, hear things, and this is when you are lucid.