Try to watch some of Shinee's FPVOD-games.
He's not Flash, but he streams his ladder runs on Afreeca, which often go to Top10.
His play is very clear cut and can give you an idea where to put your priorities.
He has very good mechanics but his APM will be relatively low for a pro for most ladder games. (250ish)
It's mostly about optimization, decisions and timing.
Lots of games are well below 10min until 2300 MMR.
I'm not saying it's easy to duplicate, because he's very sharp and efficient.
But you can learn a lot about how to play Terran because he has a very clear style.