Buy European in every official European language

The German sounds like ad speak from 100 years ago. Simple solution: "kauf" instead of "kaufe".

turkish should be more like "avrupa malı al"/"avrupadan mal al"/"avrupalı mal al" this just says "buy europe"

I was about to indulge in pedantry on the basis that some of the languages mentioned are from countries that aren't EU members. But TIL that the EU flag was originally the European flag (which was later adopted by the EU), so I'll allow it.

The Lithuanian spelling translates back to English as more like "Buy like a european". I think a more accurate translation would be "Pirk iš Europos" or "Pirk Europietiškas." The second suggested option is a more direct translation of Buy European.

Edit: nvm I am blind :D

I corrected one I tought was Finnish but there was correct Finnish one right next to it haha.

My bad. Sorry.

In French, it would be better to use "Achetez" (third person plural, considerate the polite form) instead of the much more informal "Achète".

Also, I would suggest to make circle of stars broader, broad enough to include the slogan in its entirety. There is room left around each flag for that, and fr the few ones where it won't be enough (like the last one) it won't be enough, it should be ok to make the font a tad smaller/play with spacing on that one flag.

Edit: clarification.

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Well done!!