Basically how I do these:
- I get a stiff, dull image of a flag, usually images which look as if they've been assembled on MS Paint or something similar of that sort. More realistic and detailed graphics are always welcome.
- I apply some textures on it which I created.
- If necessary, I play around with some grunge brushes that I've created to give it more of a "random" look.
- With a special filter I have, I make it look wavy.
- I turn the whole thing into a vector, pull it from the sides and all (on PSP8, with the help of the shift and ctrl keys, you can do a lot) to give it a perspective (the best that I could do with the perspective changes, though, IMHO, are the flag of Greece and Charlemagne's Oriflamme).
- I play around with the brightnesses and darknesses of certain bumps and all (with the tool on PSP8).
- I sharpen the parts where the colors intersect with the sharpen tool of PSP8, as well as the logos, if there are any (so that the blurryness that makes it look non-realistic is gone).
- Finally, I play around with the brightness in general.