A lot of things, really. But I think that going over this round by round would really help you out.
Starting with round one...
Squirt's commands for his Blitzle were
Rain Dance~Thunderbolt/Thunder/Chill~Me First/Double Kick
and yours were
Chill~Double Team~Aerial Ace
First thing you want to do, before making commands, is check the base speed of your Pokemon and compare it to your opponent's; Taillow's 85 beats Bltizle's 76. Keep that in mind.
The most obvious flaw here was using Chill on the first action. Why would you need to recover energy on the first action?
Although Thunder wouldn't have worked, I don't blame you for not getting that; however, since the arena boosted the power of Electric moves, goading it into a Chill would probably be beneficial.
Would Me First work?
The main thing you need to do when you're commanding second is to find a loophole in your opponent's plans, or if you can't, figure out how to minimize your losses that round. So, if you're looking at conditionals, try to figure out which moves would be the best for you, and use moves that would make the opponent use the moves.
Too much for you?
Starting with round one...
Squirt's commands for his Blitzle were
Rain Dance~Thunderbolt/Thunder/Chill~Me First/Double Kick
and yours were
Chill~Double Team~Aerial Ace
First thing you want to do, before making commands, is check the base speed of your Pokemon and compare it to your opponent's; Taillow's 85 beats Bltizle's 76. Keep that in mind.
The most obvious flaw here was using Chill on the first action. Why would you need to recover energy on the first action?
Although Thunder wouldn't have worked, I don't blame you for not getting that; however, since the arena boosted the power of Electric moves, goading it into a Chill would probably be beneficial.
Would Me First work?
The main thing you need to do when you're commanding second is to find a loophole in your opponent's plans, or if you can't, figure out how to minimize your losses that round. So, if you're looking at conditionals, try to figure out which moves would be the best for you, and use moves that would make the opponent use the moves.
Too much for you?