Hi,
If you want to, I can made the pattern in Illustrator and send you the preview version in the next 2 hours, before you decide whether to award me the project or not :)
I also have some questions:
1. Does it has to be vector?
2. Which image filetype do you want?
3. You said "3mm pixels", what does it means?
Thank you for reading my bid,
Regards,
Scarlett