Dear Madame/Sir,
I have submitted my designs.
I know you are busy but, would you mind to give me your feedback?
Please tell me if I am on the right track.
Thank you
Best regards,
Coco

Sorry Coco. My computer crashed and I have been dealing with that. I apologize. Yes, I will comment as soon as I can. I do appreciate your time and effort in creating a design.

Dear Sir,
Thank you for your feedback.
I improved my design and I resubmitted.
Best regards,
Coco