the practice highlighted in red is dangerous,and suicidal.. because if u press the clutch fully THEN apply brake it wont stop..it will require a tremendous effort on the part of brakes to stop and drum brakes are not that much efficient.. so the best practice is to have the clutch a little bit pressed and reduce the speed and then apply brakes/... and remember that front brakes provide 70 % of the stopping power whereas the rear brakes provide 30 % braking power..
also never ever use clutch when taking a turn,cauz at that time there will be no power delivered to engine to keep it moving in circular path so it will just skid straight, and u may get serious injuries..
another thing is that engine can also be used as breaks ,or can be used to stop a bike in conjunction to front and rear brakes.because engine not only provides power to make it run but it also takes away the power to reduce it to a halt....
make it ur strict practice not to put ur fingers on the clutch when it is not needed.. yani "ghair zaroori thor pa kabhi bi clutch ko math pakarna bashak us dabaya b na ho" the reason hgas to do with human involuntary actyins because whenever u feel threatened ur body gets tightened yani ghair iradi thour pa app ki muti band ho jathi ha,, our resultantly app ka clutch dab jatha ha and phr jaisa upar mention kia ha ka clutch dabana sa brake lagana near immpossible ho jatha ha,,so app straught jayan ga and u will ram into something..
hope u this helps u