Hi Mark!
Thanks for the invite. Unfortunately i won't be able to accept it, as i'm not available at the moment.
thanks again and Good Luck!

Best Regards

thank you for the invitation!
...would you have a color preference?

Thank you for the invitation, I will try to have a design submitted before deadline.

Thanks for the invite, but I am not sure about payment and hence would have to decline it.

I was just about to submit one of my designs when it closed.
If you still want it, i can send it. I think it has potential.

Thanks,
Aurelian