Hi, I've just submitted a design. Would you be so kind and give it some feedback?
Thank you.

like:

I also submitted a design. Please let me know what do you want to change.

I submitted a design, please do give a comment on it.

Hi sir I have submitted a design some days ago. Would you be so kind to see it and give it some feedback..?

Thanks....

Design id: 170113

Hello there,

I have submitted two designs for your company Zeit Energy. I would appreciate it if you could give me any feedback on these designs. Thank you for your time.

Artelui.