Thinking about it, I would let it grow out for a full month and start using wax in about a week or so to train it. You can cheat by cutting with it waxed, you just follow the line of your lips. After the wax wears off, you can look at the shape and it will give you an idea of how to maintain it and then you can start using more advanced techniques. The ends take a specific technique, it is better to let them grow wild until you have more confidence IMHO.