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both...
those with design talents know where to put/add..
and those like me without the talents will use references...
Most important is you have to find is it relevant and not just simply putting it.

lol.. yea.. the animated one scared too many ppl..

Is it good? well, a good replacement for hobby spray cans(since they are expensive)
You have to always keep note that nippon pylox are meant for industrial use but for plastics still ok
When you spray, try not to spray too thick as the air pressure is very strong.
After top coating it, of course it does look nice.. but if you're using spray can type top coats, have to be cautions too as frosting might appear.

Method to spray is spray from left to right covering the area you desire.
Try not to spray too long as it gets thick..
1-2 layers is sufficient unless you need a third.
Spray distance 30 cm..

Test it on a runner to get the feel.
Hope it helps

Well,iinm, the specs are due to some silver being added into the blue. What you're seeing there are most likely silver particles from the paint. Hope it's helpful.

IF i'm not wrong, that's cos industrial paints have relatively bigger particles than your hobby paint. therefore, we see 'specs' of silver on the painted product. sometimes it looks nice (like the re-zel up there) and sometimes, it looks hideous. 

enamel uses hobby thinner
acrylic can use water

Try Tamiya @ 1Utama. Plenty of Tamiya acrylics.

acrylics for panel lining? strange choice there.. people normally get enamel for panel lining..

@zheyuen: why would you choose acrylics over lacquer tho? they're more difficult to obtain.. lacquers are the way to go..

realize this is OT. ask on modelling thread la..

i just chuck them on my table, no problem for me either..
yes, to reduce silvering, you need to gloss coat first before decaling.
cement fumes? unless you start heating up or AB-ing your cement, i don't see a source of cement fumes.. that being said, modeling cement IS chemical, so best be safe than sorry..

i had the same problem(using same brand too)
i only know to solve it by spraying more layers, but that is wasting paint 

guess the other way to solve it is to use expensive hobby white primers 

detail small part = yes
for painting = no.. should use Enamel paint better

check the pinned thread