Destiny's not that good anymore, I used to watch him heaps, before that drunk stunt with 9k people watching him (gosh). I really think you should avoid listening to Destiny. I'll rather listen to someone like CatZ etc.
Just work on your micro and macro, don't go APM spamming, because of pros doing it just warm up doing that. It can really mess you up. All I can say to get better is to play more games and understand certain situations. Try to remember counters and transitions.
I used to play a lot of Starcraft 2, now I play MOBA games lol.
Good Luck, and I hope you get better ^^.
5 years ago