Ranking
Actually, You need to understand your joints movement for this.The more you will play, the more you can experience it.So just practice and like other guyz said, use relax all mode.

It helps you to understand joints better than Hold all...Try Some spar and tricking and parkour mods with other players.You will learn it quickly.
Na sahi kuch magar itna to kiya karte the
Wo mujhe dekh ke pehchan liya karte the
its not about relaxing or holded
me myself i play as 50 : 50
to get skilled just practice
practicing will make you get better and better
no matter what you do no matter what tips you get no matter how much videos of mocucha you watch :3
you won't get skills without practicing
Power Punch
A move is three parts setup the execution the pose. Get your power going then relax all. One joint at a time see what adds to the power. As you continue playing in this manner youll see what joints are used the most. The others can just be left to relax. Relaxed shouldes when throwing a punch are good. Use your abs and lumbar to do most of the aiming
What monkey said + try to play the mods you wanna play in singleplayer or in a server wigh a higher reactiontime, this way you have more time to try click your joints and look at your ghost.