things aren't always what they appear to be. Those orange flames are $2.99/yard fabric under LOTS and LOTS of clear. Somebody who is really good could do it with an airbrush...but that isn't me.
Masking tips...ummm...with that thin 3M masking tape you can do about anything you want. Only tip I can think of is to practice on a similar surface and try to find out when the best time to pull the tape off is to give you a sharp edge. Different paints have different "best" times.
Also try to always pull the tape back over itself in the direction that you are pulling the tape...I know that doesn't make much sense...instead of just lifting the tape straight up...you will get a much better edge. The tape should make a real acute "U" as you pull it off.
Burnish down the edges of the tape before you spray...trying to preven the color from "leaking" under the tape.
You'll have fun. Not really much that you can mess up that you can't unmess up.
It's just time and money.