Mustache wax is essential but practice makes perfect. You can get mustache curlers off Amazon that I have used and provide some serious curls. You still need wax, and you look dumb as hell with them on but the result speak for themselves.

That being said every mustache is different and if yours is like mine, each half will NEVER match. NEVER. NO MATTER HOW MUCH TIME YOU SPEND. Luckily, no one but you will notice or care.