Many a times, is how u perform one. Did u ask the instructor where u gone wrong or not?
Slowly down and brake will test how much of your judgement u are using:
When u need to stop, u close throttle. Closing throttle is also based on judgement. Cannot too early
stop too early. Cannot too late
dangerous.
After the throttle is closed, let the engine braking take over first before applying the brakes. This allow u to judge how much and when to apply the brakes.
Are you in 2nd or 3rd gear? Then must know to step down when slowing down.
Dun brake liao then gear still in 2nd or 3rd. This one confirm fail one because your right leg must confirm come down to let left leg change gear. Like tat finish , once right leg come down, fail liao.
Finally, when bike slowly down and about to stop, cluth-in. U must know the bike u are riding on. Tat is why each time lessons, get acustom to the bike u are riding quickly:
1.) how much must u clutch to engage/disenage the engine.
2.) how effective are the brakes. Some bikes press alittle, brake liao, some must press alot.
3.) Overall handling.
Once u master this, then no problem liao, give u wat bike, u also can ride.
Again, all I mentioned, happen very fast. So u must get to it very quickly. Dun be tempeted to look down on ur bike to see. first, this show u have no confidence. second, it is bloody dangerous.
I hope my 2 cents helps!