Practicing without any predefined method is kind of pointless.
This is what I uncovered by myself (I’m a scrub so take my advice with a grain of salt):
For cr. lk, cr. lk into super, try cr. lk, cr. lk, qcf, pump the second qcf w/ button press if it hits. If you’re using a shoto (e.g. Gouki), first try cr. lk into super (don’t practice with the stick in neutral position. You’ll want the super to come out after the second cr.lk, which means you’ll be holding down back at the start super motion). The basic idea of this is for you get use to executing the super motion fast enough.
For the execution of the super motion, try doing: down back, down, down forward, forward, back, down back, down, down forward (hold), and then button press. This is just for ease of motion (you can even do a 360 starting from down back, then down, down forward (hold)). Once you get the hang of it, you can cut the excess inputs & the holding. After you can get cr. lk to super consistently, the cr. lk, cr. lk can be done by doing a delayed double tap (slide middle, then index finger on to the lk button).
As for the hit confirm, I stare a little bit above (or around) at the area of contact. If I see the “white bubbles” that comes out from landing a successful hit, then I finish the super motion. I think some people stare at the health bar, but that’s too far away from the action, especially in a footsies battle.
Hit confirming in general:
1.) Find the longest delay possible between normal used to hit confirm & super (more time for you to react).
2.) Practice executing the combo without hit confirming (practice the combo preferably in parts).
3.) Practice on training mode dummy set on random blocking.
4.) Practice on moving opponents (CPU in training mode or arcade mode).
5.) Obligatory ???
6.) Profit
Or you can be a retard like me, and practice this at every traffic light. Wait for that shit to turn green and floor it (do be careful).
I hope this helps a little.