I'm gold league.
Im OK at Zerg (my primary), the problem is my micro skills are still not up to scratch, and frankly neither are my macro skills.
After the first 4 minutes I start to slip, I forget to continue my tech tree, I forget to build enough troops, I forget upgrades, my unspent minerals build up in to the 1000s
I was playing with some Diamond League friends (yes all my friends are Diamond, yes I get shit from them, but they play a shitload more than me XD), and I can match them, but they are faster and more thoughtful.
I wish I had more time to play, its a really fun game.
Funnily enough, unlike WC3, I enjoy the league quite a bit.
Perhaps this is because the custom game maps are not up to par yet.