Wow... it's easier than what i've saw in a couple of those hobby
mags... i think i'll give it a try real soon... but do you wipe the
lighter fluid over unpainted parts, like as finishing?
Oooo.... must try, think i'll also borrow my friend's
airbrush... 
What you do is you put the black/grey paint into a mixing dish
(or paper/styrofoam cup) and drench it with lighter fluid, mixing
it until it's runny/watery, but still colors the cup (it'll be
obvious when you swish it around). then, take a small brush, dip it
in until you have a water bead on the brush, slightly touch the
panel line and the paint will run into the line. the place where
you touched the brush will of course smear a bit, but just have
another dish of clean lighter fluid and q-tips/cotton swabs, dip it
in, and wipe off the excess - voila! done!
2nd method (only if you're confident your pieces are smooth and
no seams): take a large brush, wipe the whole piece with that same
paint/lighter fluid mixture, then clean off with clean lighter
fluid. both ways work, one's more messy but takes less
time
There should be some Gunpra Tsukurou videos on Youtube which
show the whole process too! (search Pramo/Plamo Tsukurou or
プラモ作ろう)
cool ... i also brought some hobby mags (its rare in malaysia)
and read the learning of painting but dont dare to start it .... i
only paint my HG throne zwei with gundam marker ..... other else i
dont paint it ...
gundam 00's models comes with some transparent parts at arm and
legs .... 00 also have at its gn-sword II ... how to paint it
into blue ?
sorry for my bad eng ...
the only way is to use clear colors to paint transparent
parts. Those are available in both spray cans and bottle
form. If you are painting by brush, make sure you thin it out
sufficiently since most transparent colours are quite thick and
take a long time to dry.
