About this panel lines on aircraft; many modern aircraft have quite tight joints between the individual panels which constitute the airframe that isn't visible.
We anticipate our versions should demonstrate this"detail" that doesn't exist. Take more information about aircraft paint booth, through searching online.
What a lot of men and women consider, as"panel is differences in the manner in which the paint illuminates the panel lines which will show are the ones which are accessed frequently: gun bays, a few avionics bays and fueling entry panels. That type of stuff.
Airliners are extremely similar, except that the panels will be these matters as lav accessibility, potable water, and outside power. Things like this your very best source of advice would be to look at real aircraft.
Paint the design in the finished coat and employ a"wash" of paint tucked right into a panel I'd like to highlight. Capillary action will get the paint to"run" the panel down line. The surplus paint can subsequently be eliminated from the surrounding region.
Water-based paint is excellent for this as it could be washed off with water until it dries.
(Requires and airbrush) Use a straight edge along with the board (ruler, a bit of cardetc.) and gently spray a darker color at a really low angle on the right edge. This may add a very subtle difference that's persuasive with sufficient training.
Paint the darker color along the panel lines initially, then use the topcoat a bit at a time. I've done this using an airbrush; I do not know whether it is going to use a brushed-on finish. On most Navy aircraft, touch up paint is sprayed on"dings", tear and wear the paint, and other defects in the end.