At some time or another, you will probably want to position a flag on your model. Either as decoration, or to cover up some mistake. This is done very easy, and inexpensive.
First, you will have to make a flag. The quickest way is to paint your pattern on a paper tissue or something. The thinner the paper, the better. Also, avoid toilet paper with patterns - it will show on the final result! Toilet paper altogether can cause problems, because some types dissolve in water. You can also buy templates and finished flags, but there are no reason to make it more expensive than nessecary. You can colour the flag with any kind of paint, but be aware that some will run along the paper fibers. You can try to give it a thin coat of laquer first, so the paint isn't absorbed into the flag.
To position your flag, soak it in dilluted white glue, and drape it over the model where you want it. You can fiddle with it once it's there, but be very careful! The vet flag is very fragile, and will tear apart if you pull it to hard. Be sure not to place the flag on some kind of functioning part, such as engine grills and so on - this would block the airstream, and possibly cause a fire, so it wouldn't be done on the real vehicle. Once the flag is dryed, it wil be hard, and will not re-position. You can then weather it along with the vehicle, but remember, that the flag will probably not have seen as much "action" as the vehicle.
All contents written by Christian Ankerstjerne unless stated otherwise