Here's a pic of what my problem is right now:

http://s1219.photobucket.com/albums/dd440/ExarKun77/Slave%201%20model%20kit/?action=view&current=DSCN1744.jpg

Some spots appear, and even on the areas that look ok, when i pass my finger on, it's not smooth at all.

I am using Tamiya acrylics, thinned with alcohol (50/50 for the moment). And i'm kind of stuck on acrylics, it's the only thing i can find easily here.

Cheap airbrush and compressor, but i should at least be able to get an even layer on a surface.

When airbrushing, i do a first quick and light pass, then come back and do slow passes, avoiding the surface to get wet.

What am i doing wrong?

wrong mix?

need to do something after each layer to get them smooth?

or maybe need to slow my passes and get the surface wet as i airbrush?

edit: found a possible answer on SSM.

My mix ratio may cause the paint to dry even as i spray.

So i'll try spraying closer to the model, or switching to water as a thinner, and i'll see.