Adjusting the zon stuff is nearly an art!
It is also personnal 'what I like' stuff.
You will only learn by doing, so go for it Mate!

You can always delete the bad file.
It's not like welding the Gas Grill to the hood of the Wife's car.
(Bad idea. BAD! BAD!)
You CAN'T delete the weld marks on the Wife's car.