8/10,
1) red and blue have spaces behind thier bases and teal doesnt.
2)You could have filled in the bottom right with water and made the bottom left a small sace for teal like red and blue
3)There is nothing to fight for, every one has thier own expansion, you should open the middle(or not), but anyway you should put something in there to fight for, like mins or vespene.
4) my bottom itches
overall good job.