Tips in lying:
1. Be consistent. Remember every god damn lie you said, including every response you get.
2. Always prepare for the "second" question. Because most of the time, the first question is just a trap.
3. If you get lucky and get through with the second one, try to feel the situation if there will be a next question in which there will always be. Brace yourself, more interrogations are coming.
4. Don't talk too much. Less talk, less mistakes.
5. As much as possible, avoid telling your lies to your friends even if you trust them so much. Not that they will betray you, but it's just they might tell a different version of your lie to be safe for them, in which may lead on being caught. Remember, consistency is the key to a successful lie.
6. When caught, admit you lied and tell the truth, Don't cover a lie with another lie.