[These are sample Request Letter for Design Approval to related Authority. You can follow these sample application letter for design approval to the boss, vendor, designer etc and reverse letter to the client for design approval. You can modify this sample as your requirement.]
The Executive Engineer, (Job designation)
Company or institute name…
Sub: Request for Design Approval
It is to inform you that your design which you have made on fabric (product name) through the fabric painting technique (Approved line) has been accepted by our manager of (Company/Institute name). For this purpose, we have gotten a suitable design from an architect which is attached herewith. We are glad to announce you like the new designer for our upcoming clothing brand (Describe your requirements). We hope to have a good working experience with you.
You are requested to please give approval for the design of our house at an above-mentioned place. Thank you for your time and interest in our case.