I'm sure there is more to it, but acrylics are thinned with water, enamels with mineral spirits, and lacquer with lacquer thinner / acetone.

here's a few rockets using createx

the airbrush acrylic clearcoats are terrible for rockets , but you can use any clear or flat you want to
I've used everything from Future to common spray clears to automotive urethanes(and everything in between)

Future is actually very runny , don't thin it ,spray it strait from the bottle.
spray in several >light<coats it takes quite a few coats to get a glasslike surface.

you can mix some acrylic color(tiny amount)in it to make a candy coat over a silver or gold basecoat. very cool effect

ScaleNut.... Wow... Awesome pictures!!

What did you use to get the purple on the bottom of the FatBoy? Is it "Irridescent Purple"?

Ah Ha! Now I know who Scale Nut is! :D

Beautiful birds, Scalenut. Your mad paint skillz are truly worthy of the "Craftsman" moniker.

I particularly like the Red Max with inverted color scheme. Bold!

wow dude the fat boy rockets are insane. the flames are great. the kits in all are works of art. thanks for showing off your artistic skills dude. :) :)