k, where to begin?
first i'm gonna do you(W0) and then the zerg.
W0
1. scout with a scv.
2. don't wall vs zerg
3. too many bunkers and static defenses in general
4. lucky for you, your opponent sucked pretty bad(no offense).
5. if he had muta harassed you from the beginning, things might've been different.
6. metal, in general, against z isn't recommended, but you should've brought tanks to back those gols. (worked, anyway)
7. If you're making 5 goliaths in a single factory, that should tell you to make another fact.
Now zerg
1. scout with overlord and a drone.
2. too many static defenses.
3. expand faster
4. make MORE hatches.
5. if you had scouted, and gone mutas, you might've won.
6. lurkers, plz.
Both failed in the scouting department and making too many static defense which weren't really needed.
Oh well.