Here are some replays of me:
http://www.sc2replayed.com/replays/62558-1v1-protoss-zerg-lost-temple
http://www.sc2replayed.com/replays/62559-1v1-protoss-zerg-lost-temple
http://www.sc2replayed.com/replays/62561-1v1-protoss-zerg-blistering-sands
In these, I'm fighting against platinum toss players and lose all three (lol spoilers).
The first two replays are what bother me the most since I simply lose to that. Simply. Lose. To. That. The guy I'm playing in the 3rd replay is someone I met in TL and he's extremely nice and helpful (and since I'm new to TL, I gotta thank you guys for being awesome :D (he even showed me the Unit Tester)).
Anyway, he watched the games I had against the guy in my first two replays. He told me I should probably use roaches. As strong as roaches are, THEY'RE TOO SLOW. I love mutalisks and speedlings for their mobility, but he's right...I don't want to use the same strategy over and over again.
I've been to liquipedia for builds to write in my notebook and to practice, but I can't seem to find a nice starting one for roaches. The one on the site seem all-in >_>. Help?