Hi there!
I'm TFNG, having only been using Colemak for two weeks (and still nowhere near done - I just finished the home row at about 20 wpm), but hey.
Also, I am ashamed to say that this entire post has been written in QWERTY, for the sheer sake of time.
I've been a life-long QWERTY user, unfortunately, and it's been quite deeply rooted in my brain. I don't use textbook postures (my right hand dominates more than half of the board, and I rarely use my ring or pinky fingers.) I can type 75-85 words a minute, which is about 3x as fast as any student in my school. I believe there are one or two teachers who can still catch up to me, though. After going all-out in a 5-hour typing session, my aching wrists told me that I needed to get away from these awful mushy keys (I'm getting my first mechanical keyboard today), and that QWERTY had to go.
I installed Colemak on my Mac (Colemac?) almost half a year ago, but after getting frustrated with only being able to spell "sisters" over and over, I left it until about two weeks ago. I got a more refined training program (Master Key), and have practiced for about half an hour every day. Master Key judges your mastery of the lesson being taught on 3 points - speed (your WPM must be over a certain point, ranging from 10 to 45 wpm), accuracy (how many typos you leave and don't correct - must be over 90%), and another thing, of which I forget the name (how many typos you make - must be under 5%). I hate that last thing to death, because I'm always hovering just under that 5%. I never worry too much about the other two, because so far I'm just typing "tt nn tn tn tn ao ao ooa ooo" for the first half of the lesson, so I can boost my wpm up so that it won't decay when I get into actual words. The two longest words I can type efficiently are "Tennessee" and "states".
I know that eventually it'll iron out of my brain, but the one key I have the most issues with is R. My left ring finger is by far my weakest finger, and occasionally when I type, it just randomly flexes and hits an R. It's not a muscle spasm as much as it is my brain, but are there any tips for making sure I don't press R when I don't mean to, but I would still be able to hit it quickly without stopping for a second or two to make sure I press the right key?
Well, that's my first post on this forum, and I look forward to meeting you all!
Cheers!
~ping111