Can anyone tell me how to hand paint camouflage? I know it can be done well, you can't even tell it wasn't air-brushed.

Thanks,

You can use masks, but the paint may collect on the edges. If you get good quality brushes you can carefully lay down the pattern, laying down the paint in one pass. When it is dry you can go over again, but again, watch the edges. For me, using thinned acrylic paint worked better.

If you go the masking route, avoid Model Master Enamels. They have a nasty habit of bleeding. I would recommend that you steer clear of Tamiya's acrylic line. They are very difficult to paint by hand.
Russ: I assume you are speaking of Vallejo acrylics? This is probably the safest bet.
However, if you are not using a mask, Model Master's enamel line provides excellent coverage and leveling.
This being said, I would recommend you purchase a starter airbrush kit and some canned air. Harbor Freight(no affiliation) has a starter set that will run you about $30 and canned air is fairly inexpensive. The drawback to this airbrush is that it has a very fine spray pattern, with a tip diameter of about .2mm. This is how I first got into using an airbrush and the results are well worth the money. Your biggest cost will be the spray booth. To avoid this, if climate permits, you can spray outside.

If your going to try it,I would recommend the Vallejo Model Color line,they are excellent for brush painting.

Not Vallejo Model Air