Hello Mieczyslaw,

The patches show respect to the countries:
A) That the art originated in-Korea.
B) The Country you are learning in, not nesesarily your country, I would see if you can find a patch with the Polish and U.S.A. flag crossed like here:

This one looks good
http://www.polartcenter.com/Polish_and_American_Crossed_Flag_Patch_p/9290090.htm

ahhh
http://www.polandbymail.com/get_item_435103_shield-patch-crossed-polish-american-flags-iron-on.htm

And show it to your instructor, I am sure he would not mind as long as he is aware of your strong National Pride

Tang Soo!

Martial Art Style Tang Soo Do-Hapkido

Thank you for your response. I will try to follow your suggestion. For me it would be a perfect solution, but as you said, I will ask my instructor first.

Thank you

Martial Art Style Tang Soo Do