Hey, and welcome!
Glad to hear you did good trying something new, aggressive play is more fun than just folding. Nash's guide isn't set in stone, it's just a great strategy for beginners who want to be able to beat the lower limit games. A lot of people also have success playing aggresively from the start, but that style of play requires great postflop skill and not to mention a good understanding of the current table conditions.
If I am to add some constructive advice in the reply to what I realize wasn't even a question, it's gonna be this: Try analyzing what you did well and where you got lucky. You seem a bit results orientated. Maybe an aggresive approach works for you, but don't base it on that one win. Or change your style because of a bad night for that matter. Your 45 SnG's are just too few to say something whether your strategy is working or not.
Anyways, GL!