first all ..do not treat them as masters ..but as a friend, there are no masters when it comes to fishing, kita semuanya temen tidak kira latarbelakang kmu apa. what they will teach you as far i know them is to be humble...thats all, and just some good fishing antics.
i let you know when they get here

its very diffcult to explain casting on the internet...you just have to watch LIVE how its done..its very easy, in 15 minutes you will be a proper caster and theres no big secret about it too.
at the meantime..just do soft presentation using the parachute method...you can find this from the internet. this is good practise ,, as it teaches you how to gently drop you fly on target.
what i can say is ...just before the end of your cast when you release the final line, hold your rod up at a 45 degrees angle and gently shake your rod tip left to rite a few times.....try this and see how the fly drops.

this cast is famous among western fishers who would drop the fly very near a trout. in a sense the gentle shake of the rod would kill off whatever enegery left in a cast and the fly will for a moment be suspended in mid air before gently floating down to the water....just like an insect that drops into the water when they are tired and the trouts are waiting below