Hi, Project Owner.
I'm interested in your project. I hope you won't close it before the original deadline you set at the beginning. I will submit my design within the next 2x24 hours. I hope you'll be willing to wait for it.
Thank you.
Best regards.

I will wait. Thank you

Dear Project Holder
Pls provide your valuable feedback for my designs.
As you can understand no project can be successful without timely feedback & continuous interaction, thus we request you to provide your feedback.
Waiting for your feedback
Thank you

Hello Project Owner,
Can you please check my designs & provide me your valuable feedback.
Thanks