I mentioned the versions I am using because as a plug-in I think it must be built for a specific version or else I am using the plug-in incorrectly. It doesnt work as part of the exporter.
As to the painting... I can think of three methods for working on skins of which painting is only one. It seems to be the most common though. Last night I was playing around with Illustrator to create a 3D spinner for one skin and then imported it into Photoshop for color application. This allows you to more properly control the highlighting and of course it much faster to get it right.
Also... I went by Krusty's tutorial which really helped getting things lined up for the entire process. He indicates that the standard resolution is 1024x1024. However, there isnt any reason to restrict yourself to that during creation. I increased the starting resolution to ten times that scale during creation and then scaled it down for saving. The results were much better and allows for more detail in miniature. Some of it disappears during the color reduction process but enough remains to make it worthwhile.
Finally... I think ideally it would be nice to start with super-high resolution images of a real aircraft. Im thinking on the order of 72 megapixels of separate section of the aircraft. Getting permission to take images in a museum (which would probably be the only place for some airplanes) would be difficult. The idea being that the results would be even more spectacular.
I know its not worth all that to a lot of people. I am going to give it a shot though. Bear in mind this school quarter just started and Im not likely to be concentrating on skins right now but I thought I would see what your thoughts are.
holy crap 10 times larger

my system would just...stop....

seriously though, I thought about that, but just going up to 2048...but was happy with the results of 1024, so didn't bother...
the thing with using images....that's what you mean right using an image of a real plane to skin it????
I could be reading it wrong but I think it would be just too hard for the right skins, no way you could get the pics....maybe I am reading that wrong.
I use GIMP its free and easy to use, works with layers, everything needed.
was natural for me to paint, I use a tablet which makes it much easier.