Is there a certain size that it has to be?

The final graphic needs to be big enough to be printed at 30cm wide, and will be shrunk for other purposes such as email signatures

is there a human being behind the contest owner or is this contest another "system-error"?? Just in case it`s a human - how about some FEEDBACK???? ......I mean, just in case you re really interested in improvement and developement of the submitted designs - which , after all, is in your own interest

Please note, it is impossible for me to provide feedback to all designers. If you do not receive feedback or a score, you can assume your design does not meet my requirements.

feedback please....