The second I got off much better harass, denied his expo, and essentially put him in the position to have nothing left to do except all-in me for a chance at the win. I think in both they show a much better use of map control and vision, as I typically knew exactly what was coming for me. I could have used the overseer a bit more to see what was going on behind that little terran wall, but overall I see an improvement.
For the losing replay, I definitely let my macro slip all over the place, I didn't have near the drone saturation I should have, nor the hatches up to produce enough units. I corrected this in the second, although I definitely didn't expand nearly as much as I should have, as in I didn't take anything past my natural and had minerals floating all over the place. Anyway, here are the replays and I look forward to any criticisms you may have!
ZvT - Loss - http://www.sc2replayed.com/replays/122509-1v1-terran-zerg-steppes-of-war
ZvT - Win - http://www.sc2replayed.com/replays/122510-1v1-terran-zerg-jungle-basin