Thank a lot for your advice. I will relaunch the project after improvement.
First for sure, I will change the name to leather wrap and apologize for my poor English.
Back to the design, actually there are two designs originally. The Horizontal and Vertical flag. I chose the vertical one for the project. Maybe I should have two options for people to select?
The pocket-type pouch design you said, is it means the cuboid without the upper cover and one hold at the bottom? I may try to make an example.
And lastly, the price is the horrible decision I made. I set the cost too high. I have no experience of selling and price setting. Thank you for the example provided.