just do a google image search on the flags get the image then scale it down to the

for Blattsalat flag the skin size is 256x128
for DaBro0zar flag the skin size is 256x256

such as, here are 2 flag iamges resized ready to use on Blattsalat's flag model.

Nato

North Dakota


many websites can be found with flag images. Afganistan I did a search on it and found 5 differnt national flags for that country alone