OK, let's see;
"Application" - dampen the applicator. Spread the polish (dime sized dollop - good for one body panel) very thinly over paint. Spread to where it seems to almost dsappear.
"Swirls & Z-5" - Z-5 will not remove deeper swirls/scratches. Multiple coats will "hide", but not remove.
For deeper blemishes, polish area first with 3-M Finesse-It, of Zaino Z-PC, followed by acoat of Z-5 or Z-2, once blemishes are removed.
I hope that answered your questions?
Ed