As a creepypasta fan I'll tell you:
1. It has to be at midnight or 3am
2. It also has to be in the living room, nowhere else.
3. You gotta do it when there's nobody around.
4. You HAVE to sit on a couch or sofa, close your eyes, and say these words: "Smile my dog, smile!"
5. Once you hear the words "spread the word", open your eyes and he'll be standing right in front of you.