Woohoo! It was 2:30 am and I decided to play 1 quick game of Starcraft before bed and I got a ZvT. Needless to say, I was happy because that is currently my best match up. I went for my usual Infestor/Ling but decided to add in Mutalisks to the mix to harrass and contain. The Terran began the match by building a Supply Depot on my natural so I took my first expansion was too my third. After killing off his depot, I took my natural which set me up on 3 bases within 5 mins so my economy was booming.
He went for a Marine/Medivac/Tank/Blue Flame Helion army comp. After a while, he engaged my army in the middle of the map and his helions/tanks ripped through my lings, as did the marines because my infestor's were too far back to get the fungal when it was needed. He won that battle but took heavy losses. He pushed forward with tanks and a few marines but I was mas macroing during battle so I had lings and infestors popping as he entered my base and as he was approaching my base after the battle be wrote in chat: "Yeayeayea!! yea! G G G G G" and then i cleaned up his attack and morphed in about 15 Mutalisks and prevented his expansion and use my zerglings and infestors to clean up his drop and he left.
After that, I got to the score screen and I got the notification that I was promoted to Gold League and entered at Rank 10. Woop! So happy that all the reading and practising is starting to pay off a bit