>>23613821
Find pics of the flags you want and laser copy them onto decal paper. It's easier than you think, but most copiers can't print white.

This is a bit of the graphic I made for the G Gundam Groupbuild contest awhile back. You only get one shot, but you have 8.5 x 11 inches to play with, so copy paste everything in different sizes and colours and see whatever works best on the model. The graphics were the hard part. The printing took a few seconds.