As a side note - my macro last night was freaking woeful.
Get your CCs and unit producing structures on like 3-4 separate hot-keys, tap through them (i.e. 4, 5, 6) and always make sure there's something building.
Even if you're in the middle of a battle, focus less on the battle and more on tapping through those hot-keys and making sure something is building, there should never be a time something isn't building.
More importantly keep an eye at the top-right supply, if you're coming close to supply build a supply depot - try to iron out getting supply capped and watch your macro boom!
Even the smallest donations help keep sc2sea running! All donations go towards helping our site run including our monthly server hosting fees and sc2sea sponsored community tournaments we host. Find out more here.